{"id":36788,"date":"2023-01-24T03:05:25","date_gmt":"2023-04-30T13:21:07","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8apache-spark%e5%ad%a6%e4%b9%a0%e5%88%86%e5%b8%83%e5%bc%8f%e5%a4%84%e7%90%86\/"},"modified":"2024-04-29T11:12:23","modified_gmt":"2024-04-29T03:12:23","slug":"%e4%bd%bf%e7%94%a8apache-spark%e5%ad%a6%e4%b9%a0%e5%88%86%e5%b8%83%e5%bc%8f%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8apache-spark%e5%ad%a6%e4%b9%a0%e5%88%86%e5%b8%83%e5%bc%8f%e5%a4%84%e7%90%86\/","title":{"rendered":"\u4f7f\u7528Apache Spark\u5b66\u4e60\u5206\u5e03\u5f0f\u5904\u7406"},"content":{"rendered":"<pre class=\"post-pre\"><code>Welcome to\r\n      ____              __\r\n     \/ __\/__  ___ _____\/ \/__\r\n    _\\ \\\/ _ \\\/ _ `\/ __\/  '_\/\r\n   \/___\/ .__\/\\_,_\/_\/ \/_\/\\_\\   version 2.0.0\r\n      \/_\/   \r\n<\/code><\/pre>\n<p>2016\u5e747\u6708\u672b\uff0cApache Spark 2.0.0\u53d1\u5e03\u4e86\uff0c\u6211\u7b2c\u4e00\u6b21\u5c1d\u8bd5\u4e86\u4e00\u4e9b\u529f\u80fd\uff0c\u505a\u4e86\u4e00\u4e9b\u7b14\u8bb0\u3002<br \/>\n\u56e0\u4e3a\u8fd9\u53ea\u662f\u7b14\u8bb0\uff0c\u8bf7\u591a\u5305\u6db5?<br \/>\n\u53e6\u5916\uff0c\u672c\u6587\u4e2d\u9644\u5e26\u7684\u793a\u4f8b\u4ee3\u7801\u4e3b\u8981\u662f\u4ee5Java\u4e3a\u4e3b\uff0c\u4f46\u6211\u89c9\u5f97Scala\u548cPython\u66f4\u52a0\u7b80\u6d01\u3002<br \/>\n\u4ee5\u540e\u4f1a\u968f\u65f6\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n<h1>Apache Spark \u662f\u4ec0\u4e48<\/h1>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/3-0.png\" alt=\"sparkhadoopgraphic\" \/><\/div>\n<blockquote><p>\u6839\u636e\u56fe\u7247\u6765\u6e90\u4e8ehttps:\/\/spark.apache.org\uff0c\u636e\u8bf4\u6709\u65f6\u5019\u6bd4Hadoop\u7684MapReduce\u5feb100\u500d\uff0c\u975e\u5e38\u5f3a\u5927\uff0c\u662fSpark\u3002<\/p><\/blockquote>\n<p>Spark\u662f\u4e00\u4e2a\u5f00\u6e90\u6846\u67b6\uff0c\u53ef\u4ee5\u5feb\u901f\u5e76\u884c\u5904\u7406\u5927\u578b\u6570\u636e\u3002(Java\u6742\u5fd7\u4e2d\u5199\u7740Spark\u662f\u4e00\u4e2a\u5feb\u901f\u4e14\u53ef\u6269\u5c55\u7684\u901a\u7528\u5206\u5e03\u5f0f\u5904\u7406\u5f15\u64ce)<\/p>\n<blockquote><p>\u6211\u8ba4\u4e3a\u91cd\u8981\u7684\u662f\u4ee5\u4e0b\u51e0\u70b9\uff08\u901a\u8fc7\u9605\u8bfb\u5404\u79cd\u7f51\u7ad9\u548c\u6587\u4ef6\uff09\u3002<br \/>\n\u6709\u5173\u4ee5\u4e0b\u5185\u5bb9\u7684\u8be6\u7ec6\u4fe1\u606f\u5c06\u5728\u540e\u6587\u4e2d\u63d0\u53ca\u3002<\/p><\/blockquote>\n<p>1. \u5f39\u6027\u5206\u5e03\u5f0f\u6570\u636e\u96c6\uff08RDD\uff09\u7684\u5de5\u4f5c\u539f\u7406<br \/>\n2. \u652f\u6301Scala\u3001Java\u3001R\u3001Python\u7b49\u7f16\u7a0b\u8bed\u8a00\uff08\u63d0\u4f9b\u4e86\u76f8\u5e94\u7684API\uff09<br \/>\n3. \u4e30\u5bcc\u7684\u5e93\u96c6\u5408<br \/>\n4. \u591a\u79cd\u90e8\u7f72\u65b9\u6848\uff08\u72ec\u7acb\u6a21\u5f0f\u3001YARN\u3001Mesos\u3001\u5185\u5d4c\u6a21\u5f0f\u3001\u4e91\u73af\u5883\uff09<br \/>\n5. \u5e7f\u6cdb\u7684\u5904\u7406\u6a21\u578b\uff08\u6279\u5904\u7406\u3001\u4ea4\u4e92\u5f0f\u5904\u7406\u3001\u6d41\u5f0f\u5904\u7406\uff09<\/p>\n<blockquote><p>\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u6839\u636e\u65e5\u7ecfBP\u516c\u53f8\u53d1\u5e03\u7684\u201cIT\u57fa\u7840\u8bbe\u65bd\u6280\u672f\u59562015\u201d\u8bc4\u9009\u7ed3\u679c\uff0cSpark\u83b7\u5f97\u4e86\u4e9a\u519b\uff0c\u7d27\u968fDocker\u83b7\u5f97\u6e96\u5927\u5956\u3002<\/p>\n<p>Spark\u4e0eHadoop\u4e00\u6837\u90fd\u662f\u5206\u5e03\u5f0f\u5904\u7406\u6846\u67b6\uff08\u786e\u5207\u5730\u8bf4\uff0c\u8d1f\u8d23\u7684\u90e8\u5206\u6709\u4e9b\u4e0d\u540c\uff09\u3002Spark\u6700\u65e9\u7531\u52a0\u5dde\u5927\u5b66\u4f2f\u514b\u5229\u5206\u6821\u5f00\u53d1\uff0c\u5e76\u57282014\u5e74\u6350\u8d60\u7ed9\u4e86Apache Software Foundation\u3002\u4e0eHadoop\u4f7f\u7528Java\u8bed\u8a00\u4e0d\u540c\uff0cSpark\u662f\u4f7f\u7528Scala\u8bed\u8a00\u5f00\u53d1\u7684\u3002<\/p><\/blockquote>\n<h3>Spark\u7684\u719f\u7ec3\u7a0b\u5ea6<\/h3>\n<h4>\u5f97\u610f<\/h4>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Hadoop\u3067\u52a0\u5de5\u3057\u305f\u306e\u3061\u306e\u30c9\u30ea\u30eb\u30c0\u30a6\u30f3\u5206\u6790<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">TB\u7d1a\u307e\u3067\u306e\u30c7\u30fc\u30bf\u3092\u6271\u3046\u30b7\u30b9\u30c6\u30e0<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u304c\u6709\u52b9\u3067\u306a\u3044\u30ed\u30f3\u30b0\u30c6\u30fc\u30eb\u306e\u30c7\u30fc\u30bf\u5206\u6790<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u6570\u79d2~\u6570\u5206\u7a0b\u5ea6\u306eHadoop\u3088\u308a\u3082\u77ed\u3044\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u5fc5\u8981\u306a\u51e6\u7406<\/ul>\n<h4>\u4e0d\u592a\u9ad8\u5174<\/h4>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30af\u30e9\u30b9\u30bf\u5168\u4f53\u306e\u30e1\u30e2\u30ea\u306b\u4e57\u308a\u304d\u3089\u306a\u3044\u5de8\u5927\u306a\u30c7\u30fc\u30bf\u51e6\u7406(TB\u4ee5\u4e0a)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u5c11\u3057\u305a\u3064\u66f4\u65b0\u3059\u308b\u51e6\u7406<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u79d2\u4ee5\u4e0b\u306e\u6642\u306b\u77ed\u3044\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u5fc5\u8981\u306a\u51e6\u7406<\/ul>\n<h2>\u4e0eHadoop\u7684\u4e0d\u540c\u4e4b\u5904<\/h2>\n<p>\u4f5c\u4e3a\u76f8\u540c\u7684\u5206\u5e03\u5f0f\u5904\u7406\u6846\u67b6\uff0cHadoop\u662f\u8457\u540d\u7684\u3002\u867d\u7136\u8fd9\u4e24\u8005\u4e0d\u80fd\u76f4\u63a5\u8fdb\u884c\u6bd4\u8f83\uff0c\u4f46\u6839\u636e\u4ee5\u4e0b\u56fe\u7247\uff08\u5f15\u81eahttp:\/\/www.aerospike.com\/blog\/what-the-spark-introduction\/\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u51faSpark\u4e0eHadoop\u7684\u5bf9\u5e94\u5173\u7cfb\u5e94\u8be5\u662f\u5728MapReduce\u8fd9\u4e00\u90e8\u5206\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/16-1.jpg\" alt=\"hadoopgraphic2\" \/><\/div>\n<p>Hadoop\u81ea\u8eab\u662f\u975e\u5e38\u65b9\u4fbf\u7684\uff0c\u4f46\u4e5f\u6709\u4e00\u4e9b\u7f3a\u70b9\u3002Spark\u4f3c\u4e4e\u6b63\u8bd5\u56fe\u89e3\u51b3\u5404\u79cd\u7f3a\u70b9\u3002<\/p>\n<p>\u4ee5\u4e0b\u662fHadoop\u88ab\u79f0\u4e3a\u7f3a\u70b9\u7684\u4e09\u4e2a\u4e3b\u8981\u95ee\u9898\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u500b\u3005\u306e\u30e1\u30e2\u30ea\u3092\u6d3b\u7528\u3067\u304d\u308b\u8a2d\u8a08\u3067\u306a\u304b\u3063\u305f(\u30bf\u30b9\u30af\u3054\u3068\u306b\u30c7\u30fc\u30bf\u3092\u30c7\u30a3\u30b9\u30af\u8aad\u307f\u8fbc\u307f&amp;\u66f8\u304d\u8fbc\u307f\u3057\u306a\u304d\u3083\u3044\u3051\u306a\u3044\u306e\u304c\u30dc\u30c8\u30eb\u30cd\u30c3\u30af)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u540c\u3058\u51e6\u7406\u3092\u8907\u6570\u884c\u3046\u969b\u306b\u3001\u305d\u306e\u90fd\u5ea6\u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9\u304c\u767a\u751f<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u540c\u3058\u30c7\u30fc\u30bf\u3067\u3082\u306a\u3093\u3069\u3082\u4f7f\u3046\u3082\u306e\u306f\u4f7f\u3046\u969b\u306b\u7121\u99c4\u306b\u30a2\u30af\u30bb\u30b9\u304c\u3044\u3063\u3071\u3044\u767a\u751f<\/ul>\n<p>\u8fd9\u4e2a\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u6848\u662f\u901a\u8fc7Spark\u7684\u5206\u5e03\u5f0f\u5171\u4eab\u5185\u5b58\u673a\u5236RDD\uff08Resilient Distributed Datasets\uff09\u6765\u5b9e\u73b0\u7684\u3002\u7b80\u5355\u6765\u8bf4\uff0c\u4e0eHadoop\u6bcf\u6b21\u90fd\u9700\u8981\u8bbf\u95ee\u5b58\u50a8\u76f8\u6bd4\uff0cRDD\u53ef\u4ee5\u5728\u5185\u5b58\u4e2d\u8fd0\u884c\uff0c\u6709\u5f88\u591a\u597d\u5904\u3002<\/p>\n<h5>\u5728Hadoop\u7684\u60c5\u51b5\u4e0b<\/h5>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/22-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-09-09 14.57.37.png\" \/><\/div>\n<pre class=\"post-pre\"><code>(*1)HDFS:MapReduce\u3067\u51e6\u7406\u3059\u308b\u30c7\u30fc\u30bf\u3092\u6271\u3046\u3001\u5206\u6563\u30b9\u30c8\u30ec\u30fc\u30b8\u3068\u3057\u3066\u8907\u6570\u306e\u30de\u30b7\u30f3\u3092\u4e00\u3064\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3002\r\nHDFS\u306f\u7ba1\u7406\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u306eI\/O\u3092\u9ad8\u901f\u5316\u3059\u308b\u305f\u3081\u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u5b9a\u306e\u5927\u304d\u3055(\u521d\u671f\u8a2d\u5b9a\u3067\u306f64MB)\u306e\u30d6\u30ed\u30c3\u30af\u306b\u5206\u5272\u3057\u3066\u3001\r\n\u8907\u6570\u306e\u8a18\u61b6\u88c5\u7f6e\u306b\u5206\u6563\u3057\u3066\u4fdd\u5b58\u3001I\/O\u3092\u8a18\u61b6\u88c5\u7f6e\u306e\u53f0\u6570\u3060\u3051\u4e26\u5217\u306b\u5b9f\u884c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u3002\r\n<\/code><\/pre>\n<hr \/>\n<h5>\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879\u7528\u4e2d\u6587\u8f6c\u8ff0\u4ee5\u4e0b\u5185\u5bb9\uff1a<br \/>\n\u5728Spark\u4e2d<\/h5>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/26-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-09-09 15.11.31.png\" \/><\/div>\n<h2>RDD\uff08\u5f39\u6027\u5206\u5e03\u5f0f\u6570\u636e\u96c6\uff09\u7684\u673a\u5236\u3002<\/h2>\n<p>RDD\u662f\u4e00\u79cd\u53ef\u5bb9\u7eb3\u91cd\u590d\u4f7f\u7528\u6570\u636e\u7684\u5206\u5e03\u5f0f\u6570\u636e\u96c6\uff0c\u5b83\u80fd\u591f\u5728\u5185\u5b58\u4e2d\u5b58\u50a8\u6570\u636e\uff0c\u5e76\u4e14\u7ee7\u627f\u4e86Hadoop\u7684MapReduce\u7684\u7279\u6027\uff0c\u5305\u62ec\u5bb9\u9519\u6027\u3001\u6570\u636e\u672c\u5730\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<h3>I. RDD\u7684\u7279\u6027<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30a4\u30df\u30e5\u30fc\u30bf\u30d6\u30eb\u3067\u5206\u5272\u3055\u308c\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3(\u30d5\u30a9\u30fc\u30eb\u30c8\u30c8\u30ec\u30e9\u30f3\u30c8\u6027\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081RDD\u3067\u306f\u300c\u5f97\u305f\u3044\u30c7\u30fc\u30bf\u304c\u5931\u308f\u308c\u3066\u3044\u305f\u3089\u524d\u306e\u30c7\u30fc\u30bf\u304b\u3089\u518d\u751f\u6210\u3059\u308b\u300d\u3068\u3044\u3046\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u53d6\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u305d\u308c\u305e\u308c\u30a4\u30df\u30e5\u30fc\u30bf\u30d6\u30eb\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308b)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u8aad\u307f\u53d6\u308a\u5c02\u7528<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u4e26\u5217\u51e6\u7406(map,filter,groupBy,join)\u3092\u30b9\u30c8\u30ec\u30fc\u30b8\u4e0a\u306e\u30c7\u30fc\u30bf\u306b\u9069\u5fdc\u3057\u305f\u7d50\u679c\u3092\u751f\u6210<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u518d\u5229\u7528\u3059\u308b\u305f\u3081\u306b\u30e1\u30e2\u30ea\u4e0a\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u9045\u5ef6\u8a55\u4fa1\u3055\u308c\u308b(\u30a2\u30af\u30b7\u30e7\u30f3\u7cfb\u306e\u30e1\u30bd\u30c3\u30c9(*2)\u304c\u547c\u3070\u308c\u308b\u307e\u3067\u300d\u5b9f\u969b\u306e\u51e6\u7406\u306f\u884c\u308f\u308c\u306a\u3044)<\/ul>\n<pre class=\"post-pre\"><code>(*2)\u30a2\u30af\u30b7\u30e7\u30f3\u7cfb\u306e\u30e1\u30bd\u30c3\u30c9(\u5f15\u7528)\r\n&gt; RDD\u306b\u4fdd\u6301\u3057\u305f\u30c7\u30fc\u30bf\u3092\u64cd\u4f5c\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u5927\u304d\u304f\u5206\u3051\u30662\u3064\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002\r\n\u300cTransformations\u300d\u3068\u300cActions\u300d\u3067\u3059\u3002\r\n\u300cTransformations\u300d\u306fRDD\u3092\u64cd\u4f5c\u3057\u3001\u7d50\u679c\u3092\u65b0\u3057\u3044RDD\u3068\u3057\u3066\u8fd4\u3057\u307e\u3059\u3002\r\n\u300cActions\u300d\u306fRDD\u306e\u30c7\u30fc\u30bf\u3092\u64cd\u4f5c\u3057\u3001\u7d50\u679c\u3092RDD\u4ee5\u5916\u306e\u5f62\u5f0f\u3067\u8fd4\u3059\u304b\u4fdd\u5b58\u3092\u884c\u3044\u307e\u3059\u3002\r\n\u5927\u96d1\u628a\u306b\u8a00\u3048\u3070\u3001RDD\u3092\u8fd4\u3059\u306e\u304c\u300cTransformations\u300d\u3001\u305d\u3046\u3067\u306f\u306a\u3044\u3082\u306e\u304c\u300cActions\u300d\u3067\u3042\u308b\u3068\u8a00\u3048\u308b\u3068\u601d\u3044\u307e\u3059\u3002\r\n<\/code><\/pre>\n<h3>\u83b7\u5f97RDD\u7684\u751f\u6210\u9700\u8981<\/h3>\n<p>\u6709\u4e24\u79cd\u4e3b\u8981\u7684\u65b9\u6cd5\u6765\u751f\u6210\u3002<br \/>\n\u7b2c\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u79f0\u4e3aSparkContext\u7684\u9a71\u52a8\u7a0b\u5e8f\u7a0b\u5e8f\u6240\u62e5\u6709\u7684\u5bf9\u8c61\u6765\u8bbf\u95eeSpark\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">lines<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">textFile<\/span><span class=\"o\">(<\/span><span class=\"s\">\"README.md\"<\/span><span class=\"o\">);<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u52a0\u8f7d\u6587\u672c\u6587\u4ef6\u7b49\u4f5c\u4e3a\u5b57\u7b26\u4e32RDD\u7684\u6570\u636e\u96c6\u7684\u65b9\u6cd5\u3002<br \/>\n\u53e6\u5916\u4e00\u79cd\u65b9\u6cd5\u662f\u901a\u8fc7\u9a71\u52a8\u7a0b\u5e8f\u5c06\u5bf9\u8c61\u96c6\u5408\uff08\u5982\u5217\u8868\u6216\u96c6\u5408\uff09\u8fdb\u884c\u5206\u5e03\u5f0f\u5904\u7406\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u53ef\u4ee5\u5c06\u73b0\u6709\u7a0b\u5e8f\u4e2d\u7684\u96c6\u5408\u6309\u4ee5\u4e0b\u65b9\u5f0f\u4f20\u9012\u7ed9SparkContext\u7684parallelize()\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">lines<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">parallelize<\/span><span class=\"o\">(<\/span><span class=\"nc\">Arrays<\/span><span class=\"o\">.<\/span><span class=\"na\">asList<\/span><span class=\"o\">(<\/span><span class=\"s\">\"student\"<\/span><span class=\"o\">,<\/span><span class=\"s\">\"i am a student\"<\/span><span class=\"o\">))<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u800c\uff0c\u8fd9\u79cd\u65b9\u6cd5\u9700\u8981\u4e00\u53f0\u8ba1\u7b97\u673a\u7684\u5185\u5b58\u4e2d\u5305\u542b\u6574\u4e2a\u6570\u636e\u96c6\uff0c\u56e0\u6b64\u4e0d\u592a\u5b9e\u9645\u3002<\/p>\n<h3>\u2162. RDD\u7684\u5faa\u73af\u5229\u7528\uff08\u6301\u4e45\u5316\/\u7f13\u5b58\uff09<\/h3>\n<p>\u5f53RDD\u7684\u64cd\u4f5c\u88ab\u6267\u884c\u65f6\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4f1a\u91cd\u65b0\u8ba1\u7b97\u3002\u5982\u679c\u67d0\u4e2aRDD\u9700\u8981\u591a\u6b21\u5728\u64cd\u4f5c\u4e2d\u91cd\u65b0\u8ba1\u7b97\uff0c\u53ef\u4ee5\u901a\u8fc7Spark\u5bf9\u5176\u8fdb\u884c\u6301\u4e45\u5316\uff08lines\u662f\u6307RDD\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">lines<\/span><span class=\"p\">.<\/span><span class=\"n\">persist<\/span><span class=\"p\">()<\/span>\r\n<\/code><\/pre>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528Spark\u5c06\u6570\u636e\u653e\u7f6e\u5728\u4e0d\u540c\u7684\u5730\u65b9\uff0c\u5f53\u5bf9\u6807\u8bb0\u4e3a\u6301\u4e45\u5316\u7684RDD\u8fdb\u884c\u8ba1\u7b97\u65f6\uff0cSpark\u4f1a\u5c06\u8be5RDD\u7684\u5185\u5bb9\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\uff08\u5e76\u5206\u6563\u5728\u96c6\u7fa4\u5185\u7684\u591a\u53f0\u673a\u5668\u4e0a\uff09\uff0c\u4ee5\u4fbf\u5728\u4ee5\u540e\u7684\u64cd\u4f5c\u4e2d\u91cd\u590d\u4f7f\u7528\u3002\u4f60\u8fd8\u53ef\u4ee5\u5c06RDD\u6c38\u4e45\u4fdd\u5b58\u5230\u78c1\u76d8\u4e0a\u3002\u5f53\u4f60\u8ba9Spark\u5c06RDD\u6c38\u4e45\u4fdd\u5b58\u65f6\uff0c\u8ba1\u7b97\u8282\u70b9\u4f1a\u8d1f\u8d23\u4fdd\u5b58\u5b83\u4eec\u81ea\u5df1\u7684\u5206\u533a\u3002\u5982\u679c\u4fdd\u5b58\u6570\u636e\u7684\u8282\u70b9\u9047\u5230\u6545\u969c\uff0cSpark\u4f1a\u6839\u636e\u9700\u8981\u91cd\u65b0\u8ba1\u7b97\u4e22\u5931\u7684\u6570\u636e\u5206\u533a\u3002\u6b64\u5916\uff0c\u4e3a\u4e86\u907f\u514d\u8282\u70b9\u6545\u969c\u5bfc\u81f4\u901f\u5ea6\u4e0b\u964d\uff0c\u4f60\u8fd8\u53ef\u4ee5\u5c06\u6570\u636e\u590d\u5236\u5230\u591a\u4e2a\u8282\u70b9\u4e0a\u3002\u9ed8\u8ba4\u7684Java persist()\u65b9\u6cd5\u4f1a\u5c06\u6570\u636e\u5e8f\u5217\u5316\u5e76\u4fdd\u5b58\u5728JVM\u5185\u5b58\u4e2d\u3002\u81f3\u4e8e\u65f6\u673a\u65b9\u9762\uff0c\u9700\u8981\u5728RDD\u7684\u7b2c\u4e00\u4e2a\u64cd\u4f5c\u4e4b\u524d\u8c03\u7528persist()\u65b9\u6cd5\uff0c\u56e0\u4e3apersist()\u548ccache()\u65b9\u6cd5\u58f0\u660e\u4e86RDD\u7684\u6301\u4e45\u5316\uff0c\u5e76\u4e14\u5ef6\u8fdf\u8bc4\u4f30\u3002\u5173\u4e8e\u6307\u5b9a\u6301\u4e45\u5316\u7ea7\u522b\u7684\u4fe1\u606f\u53ef\u4ee5\u5728org.apache.spark.storage.StorageLevel\u4e2d\u627e\u5230\u3002\u5f53\u8bd5\u56fe\u7f13\u5b58\u65e0\u6cd5\u5168\u90e8\u653e\u5165\u5185\u5b58\u7684\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528LRU\uff08Least Recently Used\uff09\u7b56\u7565\u5c06\u65e7\u7684\u5206\u533a\u8f6c\u79fb\u5230\u78c1\u76d8\u4e2d\u3002\u8f6c\u79fb\u5230\u78c1\u76d8\u8fd8\u662f\u91cd\u65b0\u8ba1\u7b97\u88ab\u8f6c\u79fb\u7684\u6570\u636e\u53d6\u51b3\u4e8e\u6301\u4e45\u5316\u7ea7\u522b\u3002\u6b64\u5916\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528unpersist()\u65b9\u6cd5\u4ece\u7f13\u5b58\u4e2d\u79fb\u9664RDD\u3002<\/p>\n<pre class=\"post-pre\"><code>(*3)LRU\u30dd\u30ea\u30b7\u30fc:Least Recently Used\u30dd\u30ea\u30b7\u30fc\u3001\r\n\u6587\u5b57\u3069\u304a\u308a\u6700\u3082\u6700\u8fd1\u4f7f\u3063\u305f\u306e\u3092\u6b8b\u3057\u3066\u3044\u304d\u3001\r\n\u6700\u8fd1\u4f7f\u308f\u306a\u304b\u3063\u305f\u3084\u3064\u306f\u5916\u3057\u3066\u3044\u304f\u8003\u3048\u65b9\r\n<\/code><\/pre>\n<h3>IV. RDD\u64cd\u4f5c<\/h3>\n<p>RDD\u652f\u6301\u4e24\u79cd\u64cd\u4f5c\uff1a\u8f6c\u6362\u64cd\u4f5c\u548c\u884c\u52a8\u64cd\u4f5c\u3002\u8f6c\u6362\u64cd\u4f5c\u662f\u521b\u5efa\u65b0RDD\u7684\u64cd\u4f5c\uff08\u4f8b\u5982map\u3001filter\uff09\uff0c\u800c\u884c\u52a8\u64cd\u4f5c\u5219\u4e0d\u662f\uff08\u4f8b\u5982count\uff09\u3002<br \/>\n\u5927\u90e8\u5206Spark\u7684\u8f6c\u6362\u548c\u884c\u52a8\u64cd\u4f5c\u4f9d\u8d56\u4e8e\u51fd\u6570\u4f20\u9012\uff0c\u7528\u4e8eSpark\u5904\u7406\u6570\u636e\u7684\u8ba1\u7b97\u8fc7\u7a0b\u4e2d\u3002<br \/>\n\u6b64\u5916\uff0cRDD\u7684\u65b9\u6cd5\u4f1a\u5728\u95ed\u5305\u4e2d\u6267\u884c\u3002\u6362\u53e5\u8bdd\u8bf4\uff0cSpark\u5c06RDD\u65b9\u6cd5\u7684\u6267\u884c\u89c6\u4e3a\u95ed\u5305\u3002\u6267\u884cRDD\u65b9\u6cd5\u65f6\uff0c\u8be5\u65b9\u6cd5\u3001\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u8be5\u65b9\u6cd5\u7684\u51fd\u6570\u4ee5\u53ca\u5728\u51fd\u6570\u5185\u5f15\u7528\u7684\u53d8\u91cf\u4f1a\u4f5c\u4e3a\u95ed\u5305\u4e00\u8d77\u53d1\u9001\u7ed9\u6267\u884c\u5668\uff0c\u5e76\u7531\u6bcf\u4e2a\u6267\u884c\u5668\u6267\u884c\u3002<br \/>\n\u7136\u800c\uff0c\u7531\u4e8e\u95ed\u5305\u7684\u6267\u884c\u73af\u5883\uff0c\u65e0\u6cd5\u66f4\u6539\u95ed\u5305\u5185\u5f15\u7528\u7684\u5916\u90e8\u53d8\u91cf\u7684\u503c\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u4f7f\u7528\u7d2f\u52a0\u5668\uff08Accumulator\uff09\u3002\uff08\u636e\u79f0\uff0c\u7d2f\u52a0\u5668\u4ec5\u5728\u884c\u52a8\u64cd\u4f5c\u5185\u4f7f\u7528\u65f6\uff0c\u624d\u80fd\u4fdd\u8bc1\u5c06Spark\u4efb\u52a1\u7684\u66f4\u65b0\u5e94\u7528\u4e8e\u6bcf\u4e2a\u7d2f\u52a0\u5668\u4e00\u6b21\uff09<\/p>\n<pre class=\"post-pre\"><code>(*4)\u30af\u30ed\u30fc\u30b8\u30e3: \u6f14\u7b97\u3092\u5b9f\u884c\u3059\u308b\u969b\u306b\u5fc5\u8981\u3068\u306a\u308b\u5909\u6570\u3068\u30e1\u30bd\u30c3\u30c9\u7fa4\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u305f\u3082\u306e\u3002\r\n<\/code><\/pre>\n<h4>\u8f6c\u53d8<\/h4>\n<p>\u5bf9\u4e8eRDD\u8fdb\u884c\u8f6c\u6362\u5904\u7406\u540e\uff0c\u5c06\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684RDD\u3002\u8f6c\u6362\u540e\u7684RDD\u7684\u64cd\u4f5c\u5c06\u88ab\u5ef6\u8fdf\u6267\u884c\uff0c\u76f4\u5230\u5728\u52a8\u4f5c\u4e2d\u4f7f\u7528\u65f6\u624d\u5f00\u59cb\u6267\u884c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8981\u5bf9\u65e5\u5fd7\u6587\u4ef6\u8fdb\u884c\u8fc7\u6ee4\uff0c\u53ea\u4fdd\u7559\u9519\u8bef\u4fe1\u606f\uff0c\u51fd\u6570\u4f20\u9012\u7684\u65b9\u5f0f\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/A. \u7121\u540d\u306e\u30a4\u30f3\u30bf\u30fc\u30af\u30e9\u30b9\u3068\u3057\u3066\u30a4\u30f3\u30e9\u30a4\u30f3\u3067\u5b9a\u7fa9\u3057\u95a2\u6570\u6e21\u3057\u3059\u308b<\/span>\r\n<span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">srcLog<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">textFile<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Log.txt\"<\/span><span class=\"o\">);<\/span>\r\n<span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">errorLog<\/span> <span class=\"o\">=<\/span> <span class=\"n\">srcLog<\/span><span class=\"o\">.<\/span><span class=\"na\">filter<\/span><span class=\"o\">(<\/span>\r\n      <span class=\"k\">new<\/span> <span class=\"nc\">Function<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">,<\/span><span class=\"nc\">Boolean<\/span><span class=\"o\">&gt;(){<\/span>\r\n            <span class=\"kd\">public<\/span> <span class=\"nc\">Boolean<\/span> <span class=\"nf\">call<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span> <span class=\"n\">str<\/span><span class=\"o\">){<\/span><span class=\"k\">return<\/span> <span class=\"n\">str<\/span><span class=\"o\">.<\/span><span class=\"na\">contains<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Error\"<\/span><span class=\"o\">);}<\/span>\r\n   <span class=\"o\">}<\/span>\r\n<span class=\"o\">);<\/span>\r\n\r\n<span class=\"c1\">\/\/B. \u540d\u524d\u4ed8\u304d\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u3066\u95a2\u6570\u6e21\u3057<\/span>\r\n<span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">srcLog<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">textFile<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Log.txt\"<\/span><span class=\"o\">);<\/span>\r\n<span class=\"kd\">class<\/span> <span class=\"nc\">ContainsError<\/span> <span class=\"kd\">implements<\/span> <span class=\"nc\">Function<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">,<\/span><span class=\"nc\">Boolean<\/span><span class=\"o\">&gt;{<\/span>\r\n      <span class=\"kd\">public<\/span> <span class=\"nc\">Boolean<\/span> <span class=\"nf\">call<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span> <span class=\"n\">str<\/span><span class=\"o\">){<\/span><span class=\"k\">return<\/span> <span class=\"n\">str<\/span><span class=\"o\">.<\/span><span class=\"na\">contains<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Error\"<\/span><span class=\"o\">);}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">errorLog<\/span> <span class=\"o\">=<\/span> <span class=\"n\">srcLog<\/span><span class=\"o\">.<\/span><span class=\"na\">filter<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">ContainsError<\/span><span class=\"o\">());<\/span>\r\n\r\n<span class=\"c1\">\/\/C. \u30d1\u30e9\u30e1\u30fc\u30bf\u3042\u308a\u306e\u540d\u524d\u4ed8\u304d\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u3066\u95a2\u6570\u6e21\u3057<\/span>\r\n<span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">srcLog<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">textFile<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Log.txt\"<\/span><span class=\"o\">);<\/span>\r\n<span class=\"kd\">class<\/span> <span class=\"nc\">Contains<\/span> <span class=\"kd\">implements<\/span> <span class=\"nc\">Function<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">,<\/span><span class=\"nc\">Boolean<\/span><span class=\"o\">&gt;{<\/span>\r\n      <span class=\"kd\">private<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">argQuery<\/span><span class=\"o\">;<\/span>\r\n      <span class=\"kd\">public<\/span> <span class=\"nf\">Contains<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span> <span class=\"n\">arg<\/span><span class=\"o\">){<\/span><span class=\"k\">this<\/span><span class=\"o\">.<\/span><span class=\"na\">argQuery<\/span> <span class=\"o\">=<\/span> <span class=\"n\">arg<\/span><span class=\"o\">;}<\/span>\r\n      <span class=\"kd\">public<\/span> <span class=\"nc\">Boolean<\/span> <span class=\"nf\">call<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span> <span class=\"n\">str<\/span><span class=\"o\">){<\/span><span class=\"k\">return<\/span> <span class=\"n\">str<\/span><span class=\"o\">.<\/span><span class=\"na\">contains<\/span><span class=\"o\">(<\/span><span class=\"n\">argQuery<\/span><span class=\"o\">);}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">errorLog<\/span> <span class=\"o\">=<\/span> <span class=\"n\">srcLog<\/span><span class=\"o\">.<\/span><span class=\"na\">filter<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">Contains<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Error\"<\/span><span class=\"o\">));<\/span>\r\n\r\n<span class=\"c1\">\/\/D. Java8\u306e\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u3063\u3066\u95a2\u6570\u6e21\u3057(\u30aa\u30b9\u30b9\u30e1)<\/span>\r\n<span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">srcLog<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">textFile<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Log.txt\"<\/span><span class=\"o\">);<\/span>\r\n<span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">errorLog<\/span> <span class=\"o\">=<\/span> <span class=\"n\">srcLog<\/span><span class=\"o\">.<\/span><span class=\"na\">filter<\/span><span class=\"o\">(<\/span><span class=\"n\">s<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">s<\/span><span class=\"o\">.<\/span><span class=\"na\">contains<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Error\"<\/span><span class=\"o\">));<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\u7684\u64cd\u4f5c\u5e76\u4e0d\u662f\u6539\u53d8`srcLog`\u8fd9\u4e2aRDD\u672c\u8eab\uff0c\u800c\u662f\u9700\u8981\u6ce8\u610f`filter()`\u51fd\u6570\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u6307\u5411\u5168\u65b0\u7684RDD `errorLog` \u7684\u6307\u9488\u3002<\/p>\n<p>[\u88dc\u5145]\u4e3b\u8981\u7684Java\u51fd\u6570\u63a5\u53e3\u5728org.apache.spark.api.java.function\u4e2d\u3002<\/p>\n<div>\n<div class=\"post-table\">\u95a2\u6570\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u30e1\u30bd\u30c3\u30c9\u4f7f\u7528\u65b9\u6cd5Function&lt;T1,R&gt;R call(T1)\u5165\u529b\u3092\u4e00\u3064\u53d6\u308a\u3001\u51fa\u529b\u3092\u4e00\u3064\u8fd4\u3059\u3002map()\u3084filter()\u306a\u3069\u3068\u4e00\u7dd2\u306b\u4f7f\u3046Function2&lt;T1,T2,R&gt;R call(T1,T2)\u5165\u529b\u3092\u4e8c\u3064\u53d6\u308a\u3001\u51fa\u529b\u3092\u4e00\u3064\u8fd4\u3059\u3002aggregate()\u3084fold()\u306a\u3069\u3068\u4e00\u7dd2\u306b\u4f7f\u3046FlatMapFunction&lt;T,R&gt;Iterable call(T)\u5165\u529b\u3092\u4e00\u3064\u53d6\u308a\u3001\u51fa\u529b\u3092\u8fd4\u3055\u306a\u3044\u3053\u3068\u3082\u3042\u308c\u3070\u3001\u8907\u6570\u8fd4\u3059\u3053\u3068\u3082\u3042\u308b\u3002\u3002flatMap()\u3068\u3044\u3063\u305f\u64cd\u4f5c\u3068\u4e00\u7dd2\u306b\u4f7f\u3046<\/div>\n<\/div>\n<h5>\u8981\u7d20\u5355\u4f4d\u7684\u8f6c\u6362<\/h5>\n<p>\u5728\u8fdb\u884c\u8981\u7d20\u5355\u4f4d\u8f6c\u6362\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528map()\u548cfilter\u7b49\u65b9\u6cd5\u3002<\/p>\n<div>\n<div class=\"post-table\">\u95a2\u6570\u8aac\u660emap()\u5f15\u6570\u306b\u95a2\u6570\u3092\u4e00\u3064\u53d6\u308a\u3001\u305d\u306e\u95a2\u6570\u3092RDD\u5185\u306e\u5404\u8981\u7d20\u306b\u9069\u5fdc\u3057\u3001\u305d\u306e\u7d50\u679c\u3092\u65b0\u3057\u3044\u5024\u3068\u3059\u308bRDD\u3092\u8fd4\u3059filter()\u5f15\u6570\u306b\u95a2\u6570\u3092\u4e00\u3064\u53d6\u308a\u3001\u305d\u306e\u30d5\u30a3\u30eb\u30bf\u95a2\u6570\u304c\u771f\u306b\u306a\u308b\u8981\u7d20\u3060\u3051\u3092\u542b\u3080RDD\u3092\u8fd4\u3059<\/div>\n<\/div>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f8b\u5b50\uff0c\u7528\u4e8e\u83b7\u53d6RDD\u5185\u6bcf\u4e2a\u503c\u7684\u7edd\u5bf9\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Integer<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">input<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">parallelize<\/span><span class=\"o\">(<\/span><span class=\"nc\">Arrays<\/span><span class=\"o\">.<\/span><span class=\"na\">asList<\/span><span class=\"o\">(-<\/span><span class=\"mi\">1<\/span><span class=\"o\">,<\/span><span class=\"mi\">2<\/span><span class=\"o\">,-<\/span><span class=\"mi\">3<\/span><span class=\"o\">,<\/span><span class=\"mi\">4<\/span><span class=\"o\">,-<\/span><span class=\"mi\">5<\/span><span class=\"o\">));<\/span>\r\n<span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Integer<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">output<\/span> <span class=\"o\">=<\/span> <span class=\"n\">input<\/span><span class=\"o\">.<\/span><span class=\"na\">map<\/span><span class=\"o\">(<\/span><span class=\"n\">i<\/span><span class=\"o\">-&gt;<\/span><span class=\"nc\">Math<\/span><span class=\"o\">.<\/span><span class=\"na\">abs<\/span><span class=\"o\">(<\/span><span class=\"n\">i<\/span><span class=\"o\">));<\/span>\r\n<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">output<\/span><span class=\"o\">.<\/span><span class=\"na\">collect<\/span><span class=\"o\">());<\/span>\r\n<\/code><\/pre>\n<h5>\u591a\u4e2a\u8f93\u51fa<\/h5>\n<p>\u5982\u679c\u60f3\u8981\u4ece\u6bcf\u4e2a\u8f93\u5165\u751f\u6210\u591a\u4e2a\u8f93\u51fa\uff0c\u53ef\u4ee5\u4f7f\u7528flatMap()\u51fd\u6570\u6765\u5b9e\u73b0\u3002<\/p>\n<div>\n<div class=\"post-table\">\u95a2\u6570\u8aac\u660eflatMap()\u5f15\u6570\u306b\u95a2\u6570\u3092\u4e00\u3064\u53d6\u308a\u3001\u305d\u306e\u95a2\u6570\u3092RDD\u5185\u306e\u5404\u8981\u7d20\u306b\u9069\u5fdc\u3057\u3066\u547c\u3070\u308c\u308b\u304c\u3001\u3053\u306e\u95a2\u6570\u306f\u305d\u306e\u7d50\u679c\u3092\u8fd4\u3059Iterator\u3092\u8fd4\u3057\u307e\u3059\u3002\u305d\u308c\u3089\u306eIterator\u5168\u3066\u304b\u3089\u8fd4\u3055\u308c\u305f\u8981\u7d20\u3092\u5024\u3068\u3059\u308bRDD\u3092\u6700\u512a\u7684\u306b\u8fd4\u3057\u307e\u3059<\/div>\n<\/div>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5728RDD\u4e2d\u5c06\u5b57\u7b26\u4e32\u6309\u7a7a\u683c\u5206\u5272\u7684\u4f8b\u5b50\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">input<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">parallelize<\/span><span class=\"o\">(<\/span><span class=\"nc\">Arrays<\/span><span class=\"o\">.<\/span><span class=\"na\">asList<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Hello I am a dog\"<\/span><span class=\"o\">));<\/span>\r\n<span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">output<\/span> <span class=\"o\">=<\/span> <span class=\"n\">input<\/span><span class=\"o\">.<\/span><span class=\"na\">flatMap<\/span><span class=\"o\">(<\/span><span class=\"n\">s<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"nc\">Arrays<\/span><span class=\"o\">.<\/span><span class=\"na\">asList<\/span><span class=\"o\">(<\/span><span class=\"n\">s<\/span><span class=\"o\">.<\/span><span class=\"na\">split<\/span><span class=\"o\">(<\/span><span class=\"s\">\" \"<\/span><span class=\"o\">)));<\/span>\r\n<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">output<\/span><span class=\"o\">.<\/span><span class=\"na\">collect<\/span><span class=\"o\">());<\/span>\r\n<\/code><\/pre>\n<h5>\u6c47\u96c6\u64cd\u4f5c<\/h5>\n<p>\u5728\u6570\u5b66\u4e2d\uff0c\u8fd8\u6709\u8bb8\u591a\u6d89\u53ca\u96c6\u5408\u7684\u64cd\u4f5c\u51fd\u6570\u53ef\u4f9b\u4f7f\u7528\u3002<\/p>\n<div>\n<div class=\"post-table\">\u95a2\u6570\u8aac\u660eA[1,2,3],B[3,4,5],C[1,1,2,3]\u3060\u3063\u305f\u5834\u5408union()\u305d\u308c\u305e\u308c\u306eRDD\u306e\u548c\u96c6\u5408\u306e\u91cd\u8907\u3092\u8a31\u3057\u305f\u3059\u3079\u3066\u306e\u8981\u7d20\u304b\u3089\u306a\u308bRDD\u3092\u751f\u6210A.union(B) &gt;&gt;&gt; [1,2,3,3,4,5]intersection()\u91cd\u8907\u3092\u8a31\u3055\u305a\u305d\u308c\u305e\u308c\u306eRDD\u306e\u7a4d\u96c6\u5408\u306e\u8981\u7d20\u304b\u3089\u306a\u308bRDD\u3092\u751f\u6210A.intersection(B) &gt;&gt;&gt; [3]subtract()\u7247\u65b9\u306e\u8981\u7d20\u304b\u3089\u3082\u3046\u4e00\u65b9\u306e\u8981\u7d20\u3092\u9664\u3044\u305f\u8981\u7d20\u304b\u3089\u306a\u308bRDD\u3092\u751f\u6210A.substract(B) &gt;&gt;&gt; [1,2]distinct()\u4e00\u3064\u306eRDD\u5185\u90e8\u3067\u306e\u91cd\u8907\u8981\u7d20\u3092\u4e00\u3064\u306b\u307e\u3068\u3081\u305f\u8981\u7d20\u304b\u3089\u306a\u308bRDD\u3092\u751f\u6210C.distinct() &gt;&gt;&gt; [1,2,3]<\/div>\n<\/div>\n<h4>B. \u52a8\u4f5c<\/h4>\n<p>\u64cd\u4f5c\u662f\u6307\u5c06\u6700\u7ec8\u503c\u8fd4\u56de\u7ed9\u9a71\u52a8\u7a0b\u5e8f\uff08\u5177\u6709main\u51fd\u6570\uff09\u6216\u5c06\u6570\u636e\u5199\u5165\u5916\u90e8\u5b58\u50a8\u7684\u884c\u4e3a\u3002\u5728\u5bf9RDD\u6267\u884c\u64cd\u4f5c\u65f6\uff0c\u5fc5\u987b\u5b9e\u9645\u751f\u6210\u8f93\u51fa\uff0c\u56e0\u6b64\u4f1a\u8bc4\u4f30RDD\u6240\u9700\u7684\u8f6c\u6362\u7684\u6267\u884c\u3002\u4f8b\u5982\uff0c\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u51fd\u6570\u3002<\/p>\n<div>\n<div class=\"post-table\">\u95a2\u6570\u8aac\u660ecount()\u8981\u7d20\u306e\u500b\u6570\u3092\u8fd4\u3059take(int num)\u8907\u6570\u306e\u8981\u7d20\u3092\u5f15\u6570\u306e\u6570\u3060\u3051\u96c6\u3081\u3066\u304f\u308bcollect()RDD\u5168\u4f53\u3092\u53d6\u308a\u51fa\u3059(\u5c0f\u3055\u3044\u30b5\u30a4\u30ba\u5834\u5408\u306e\u307f)saveAsTestFile()\u5206\u6563\u30b9\u30c8\u30ec\u30fc\u30b8\u30b7\u30b9\u30c6\u30e0\u306b\u66f8\u304d\u51fa\u3059saveAsSequenceFile()\u5206\u6563\u30b9\u30c8\u30ec\u30fc\u30b8\u30b7\u30b9\u30c6\u30e0\u306b\u66f8\u304d\u51fa\u3059<\/div>\n<\/div>\n<p>\u53e6\u5916\uff0c\u6bcf\u6b21\u8c03\u7528\u64cd\u4f5c\u65f6RDD\u90fd\u9700\u8981\u91cd\u65b0\u8ba1\u7b97\u3002\u7531\u4e8e\u8fd9\u53ef\u80fd\u662f\u4f4e\u6548\u7684\uff0c\u56e0\u6b64\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u7528\u6237\u53ef\u80fd\u9700\u8981\u5bf9\u4e2d\u95f4\u7ed3\u679c\u8fdb\u884c\u6301\u4e45\u5316\u3002<\/p>\n<h5>\u8ba1\u7b97\u603b\u6570<\/h5>\n<p>\u5f53\u9700\u8981\u8ba1\u7b97RDD\u4e2d\u67d0\u4e9b\u503c\u7684\u603b\u548c\u65f6\uff0creduce()\u51fd\u6570\u5728\u8fdb\u884c\u805a\u5408\u64cd\u4f5c\u65f6\u975e\u5e38\u6709\u6548\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Integer<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">input<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">parallelize<\/span><span class=\"o\">(<\/span><span class=\"nc\">Arrays<\/span><span class=\"o\">.<\/span><span class=\"na\">asList<\/span><span class=\"o\">(<\/span><span class=\"mi\">1<\/span><span class=\"o\">,<\/span><span class=\"mi\">2<\/span><span class=\"o\">,<\/span><span class=\"mi\">3<\/span><span class=\"o\">,<\/span><span class=\"mi\">4<\/span><span class=\"o\">,<\/span><span class=\"mi\">5<\/span><span class=\"o\">,<\/span><span class=\"mi\">6<\/span><span class=\"o\">,<\/span><span class=\"mi\">7<\/span><span class=\"o\">,<\/span><span class=\"mi\">8<\/span><span class=\"o\">,<\/span><span class=\"mi\">9<\/span><span class=\"o\">,<\/span><span class=\"mi\">10<\/span><span class=\"o\">));<\/span>\r\n<span class=\"nc\">Integer<\/span> <span class=\"nc\">Result<\/span> <span class=\"o\">=<\/span> <span class=\"n\">input<\/span><span class=\"o\">.<\/span><span class=\"na\">reduce<\/span><span class=\"o\">((<\/span><span class=\"n\">a<\/span><span class=\"o\">,<\/span> <span class=\"n\">b<\/span><span class=\"o\">)<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"o\">(<\/span><span class=\"n\">a<\/span> <span class=\"o\">+<\/span> <span class=\"n\">b<\/span><span class=\"o\">));<\/span>\r\n<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"nc\">Result<\/span><span class=\"o\">);<\/span>\r\n<\/code><\/pre>\n<p>reduce()\u662f\u4e00\u4e2a\u63a5\u6536\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u7684\u51fd\u6570\uff0c\u5b83\u5bf9RDD\u4e2d\u7684\u4efb\u610f\u4e24\u4e2a\u76f8\u540c\u7c7b\u578b\u7684\u5143\u7d20\u8fdb\u884c\u64cd\u4f5c\uff0c\u5e76\u8fd4\u56de\u8be5\u7c7b\u578b\u7684\u5143\u7d20\u3002<br \/>\n\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528Java 8\u7684lambda\u51fd\u6570\u6765\u5bf9\u4e24\u4e2a\u5143\u7d20\u6c42\u548c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5143\u7d20\u3002\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u7ed3\u679c\u5e94\u8be5\u662f55\u3002\u9664\u4e86reduce\u4e4b\u5916\uff0c\u8fd8\u6709\u4e00\u4e9b\u7c7b\u4f3c\u7684\u51fd\u6570\uff0c\u6bd4\u5982fold()\u548caggregate()\uff0c\u5b83\u4eec\u7684\u8fd4\u56de\u7c7b\u578b\u53ef\u4ee5\u4e0e\u64cd\u4f5c\u5bf9\u8c61\u7684RDD\u4e0d\u540c\u3002<\/p>\n<div>\n<div class=\"post-table\">\u95a2\u6570\u8aac\u660ereduce(func)\u7d50\u5408\u51e6\u7406\u3092\u4e26\u5217\u306b\u884c\u3046fold(zero)(func)reduce()\u3068\u898b\u305f\u76ee\u306f\u540c\u3058\u3001\u4e2d\u8eab\u306f\u82e5\u5e72\u9055\u3046\u3063\u307d\u304f\u3001\u5358\u4f4d\u5143\u7684\u306a\u5024(\u305d\u306e\u64cd\u4f5c\u3092\u9069\u5fdc\u3057\u3066\u3082\u5909\u308f\u3089\u306a\u3044)\u3092\u53d7\u3051\u53d6\u308baggregate(func)reduce()\u3068\u540c\u3058\u3060\u304c\u3001\u8fd4\u3059\u578b\u304c\u6271\u3046<code>RDD<\/code>\u306e\u8981\u7d20\u3068\u9055\u3046\u5834\u5408\u306b\u4f7f\u3046<\/div>\n<\/div>\n<p>\u6b64\u5916\uff0c\u636e\u8bf4 rdd.reduceByKey(func) \u4f1a\u751f\u6210\u4e0e rdd.groupByKey().mapValues(value -&gt; value.reduce(func)) \u76f8\u540c\u7684 RDD\uff0c\u4f46\u7531\u4e8e\u7701\u7565\u4e86\u751f\u6210\u6bcf\u4e2a\u952e\u5bf9\u5e94\u7684\u503c\u5217\u8868\u7684\u6b65\u9aa4\uff0c\u56e0\u6b64\u5177\u6709\u8f83\u9ad8\u7684\u6548\u7387\u3002<\/p>\n<h5>\u5c06\u6570\u636e\u8fd4\u56de\u7ed9\u9a71\u52a8\u7a0b\u5e8f\u3002<\/h5>\n<p>\u5728\u4e2d\u56fd\u4eba\u53e3\u4e2d\uff0cRDD\u7684\u64cd\u4f5c\u5305\u62eccollect()\u548ctake()\u7b49\u51fd\u6570\uff0c\u7528\u4e8e\u5c06\u6570\u636e\u7684\u4e00\u90e8\u5206\u6216\u5168\u90e8\u4f5c\u4e3a\u5e38\u89c4\u7684\u96c6\u5408\u6216\u503c\u8fd4\u56de\u7ed9\u9a71\u52a8\u7a0b\u5e8f\u3002\u7531\u4e8e\u5df2\u7ecf\u5728\u4ee3\u7801\u4e2d\u4ecb\u7ecd\u4e86\u8fd9\u4e9b\u64cd\u4f5c\uff0c\u56e0\u6b64\u4e0d\u4f1a\u8be6\u7ec6\u5c55\u5f00\u3002<\/p>\n<div>\n<div class=\"post-table\">\u95a2\u6570\u8aac\u660etake(n)RDD\u304b\u3089n\u500b\u306e\u8981\u7d20\u3092\u8fd4\u3059top(n)RDD\u306e\u5148\u982d\u304b\u3089n\u500b\u307e\u3067\u306e\u8981\u7d20\u3092\u8fd4\u3059takeOrdered(n)(ordering)\u6307\u5b9a\u3055\u308c\u305f\u9806\u5e8f\u3067RDD\u304b\u3089n\u500b\u8981\u7d20\u3092\u8fd4\u3059takeSample(withReplacement,n,seed)RDD\u304b\u3089\u30e9\u30f3\u30c0\u30e0\u306bn\u500b\u8981\u7d20\u3092\u8fd4\u3059collect()RDD\u3059\u3079\u3066\u306e\u8981\u7d20\u3092\u8fd4\u3059count()RDD\u306e\u8981\u7d20\u6570\u3092\u8fd4\u3059countByValue()RDD\u306e\u5404\u8981\u7d20\u306e\u51fa\u73fe\u56de\u6570\u3092\u8fd4\u3059<\/div>\n<\/div>\n<h5>\u5176\u4ed6<\/h5>\n<p>\u5f53\u5728RDD\u4e0a\u6267\u884c\u64cd\u4f5c\u65f6\uff0c\u6709\u65f6\u6211\u4eec\u5e76\u4e0d\u9700\u8981\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9\u9a71\u52a8\u7a0b\u5e8f\uff0c\u800c\u662f\u5e0c\u671b\u6267\u884c\u8bf8\u5982\u5199\u5165\u5916\u90e8\u5b58\u50a8\u7b49\u64cd\u4f5c\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528foreach()\u51fd\u6570\u3002<\/p>\n<p>\u4f7f\u7528foreach()\u51fd\u6570\uff0c\u53ef\u4ee5\u5bf9RDD\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u6267\u884c\u64cd\u4f5c\uff0c\u800c\u65e0\u9700\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9\u9a71\u52a8\u7a0b\u5e8f\u3002<\/p>\n<div>\n<div class=\"post-table\">\u95a2\u6570\u8aac\u660eforeach(func)RDD\u4e2d\u306e\u5404\u8981\u7d20\u306b\u6307\u5b9a\u3057\u305f\u95a2\u6570\u3092\u9069\u7528<\/div>\n<\/div>\n<h3>\u2164. RDD\u8f6c\u6362\u7684\u5ef6\u8fdf\u8bc4\u4f30<\/h3>\n<p>\u6b63\u5982\u524d\u9762\u6240\u63d0\u5230\u7684\uff0cSpark\u5728\u6267\u884c\u64cd\u4f5c\u4e4b\u524d\u4e0d\u4f1a\u7acb\u5373\u5f00\u59cb\u8f6c\u6362\u5904\u7406\u3002Spark\u4f1a\u5185\u90e8\u8bb0\u5f55\u8868\u793a\u8be5\u64cd\u4f5c\u5df2\u88ab\u8bf7\u6c42\u7684\u5143\u6570\u636e\uff0c\u800c\u4e0d\u4f1a\u7acb\u5373\u6267\u884c\u8be5\u64cd\u4f5c\u3002\u7136\u540eSpark\u4f1a\u8fdb\u884c\u5ef6\u8fdf\u8bc4\u4f30\uff0c\u5c06\u64cd\u4f5c\u5206\u7ec4\uff0c\u5e76\u51cf\u5c11\u5bf9\u6570\u636e\u7684\u64cd\u4f5c\u6b21\u6570\uff08\u5728\u5185\u90e8\u8fdb\u884c\u4e00\u5b9a\u7a0b\u5ea6\u7684\u4f18\u5316\uff09\u3002\u56e0\u6b64\uff0c\u4f3c\u4e4e\u4e0d\u9700\u8981\u8003\u8651\u5982\u4f55\u5c06\u64cd\u4f5c\u7ec4\u5408\u4ee5\u5c3d\u91cf\u51cf\u5c11Hadoop Mapreduce\u7684\u6b21\u6570\u3002<\/p>\n<h3>\u2165. RDD\u4e4b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb<\/h3>\n<p>RDD\u306e\u5909\u63db\u306b\u304a\u3044\u3066\u3001\u5909\u63db\u306e\u5143(\u89aa)\u306eRDD\u3068\u5909\u63db\u5f8c(\u5b50)\u3068\u306e\u9593\u306b\u306f\u4f9d\u5b58\u95a2\u4fc2\u304c\u5b9a\u7fa9\u3055\u308c\u308b\u3002<br \/>\n\u4f9d\u5b58\u95a2\u4fc2\u306f\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0(RDD\u306e\u5909\u63db\u30c1\u30a7\u30a4\u30f3\u3092\u51e6\u7406\u53ef\u80fd\u306a\u30bf\u30b9\u30af\u306b\u5206\u5272\u3059\u308b)\u306b\u95a2\u4fc2\u3059\u308b\u3002<br \/>\n\u72ed\u3044\u4f9d\u5b58\u95a2\u4fc2(\u89aa\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u304c\u5358\u4e00\u306e\u5b50\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u306e\u751f\u6210\u306b\u95a2\u308f\u3063\u3066\u3044\u308b\u4f9d\u5b58\u95a2\u4fc2)\u3068\u3001\u5e83\u3044\u4f9d\u5b58\u95a2\u4fc2(\u89aa\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u304c\u8907\u6570\u306e\u5b50\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u751f\u6210\u306b\u95a2\u308f\u3063\u3066\u3044\u308b\u4f9d\u5b58\u95a2\u4fc2)\u304c\u3042\u308b<\/p>\n<h3>\u7b2c\u4e03\u70b9. RDD\u7684\u6297\u6545\u969c\u6027<\/h3>\n<p>RDD\u306f\u30c7\u30fc\u30bf\u305d\u306e\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u300cRDD\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u884c\u3063\u305f\u5909\u63db\u300d\u3092\u8a18\u9332\u3059\u308b\u3053\u3068\u3067\u52b9\u7387\u7684\u306a\u8010\u969c\u5bb3\u6027\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308b\u3002<br \/>\n\u3082\u3057RDD\u306e\u4e2d\u306e\u4e00\u90e8\u5206\u304c\u30ed\u30b9\u30c8\u3057\u305f\u5834\u5408\u3001RDD\u306f\u305d\u306e\u30c7\u30fc\u30bf\u304c\u4ed6\u306eRDD\u304b\u3089\u3069\u306e\u3088\u3046\u306b\u5909\u63db\u3055\u308c\u3066\u751f\u3058\u305f\u30c7\u30fc\u30bf\u304b\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u30b3\u30b9\u30c8\u306e\u5927\u304d\u306a\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3(*5)\u306a\u3057\u306b\u8fc5\u901f\u306b\u518d\u8a08\u7b97\/\u5fa9\u65e7\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n<pre class=\"post-pre\"><code>(*5)\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\r\n\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3084\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u5197\u9577\u306a\u3001\u30ea\u30bd\u30fc\u30b9\u9593\u3067\u4e00\u8cab\u6027\u3092\u4fdd\u3061\u306a\u304c\u3089\u60c5\u5831\u3092\u5171\u6709\u3059\u308b\u51e6\u7406\u3092\u610f\u5473\u3059\u308b\u3002\r\n\u4fe1\u983c\u6027\u3084fault tolerance\u6027\u3084\u30a2\u30af\u30bb\u30b9\u5bb9\u6613\u6027\u3092\u5f37\u5316\u3059\u308b\u3002\r\n<\/code><\/pre>\n<h3>\u2167. PairRDD<\/h3>\n<p>\u7b2c\u516b\u7ae0\uff1aPairRDD<\/p>\n<p>\u5728Java\u4e2d\u6ca1\u6709\u5185\u7f6e\u7684Tuple(*6)\u7c7b\u578b\uff0c\u56e0\u6b64\u7528\u6237\u9700\u8981\u4f7f\u7528Spark\u7684JavaAPI\u4e2d\u5b9a\u4e49\u7684Tuple2\u7c7b\u6765\u751f\u6210\u5143\u7ec4\u3002\u8fd9\u4e2a\u94fe\u63a5\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5173\u4e8e\u5982\u4f55\u751f\u6210\u5143\u7ec4\u7684\u8be6\u7ec6\u6307\u5357\u3002<\/p>\n<pre class=\"post-pre\"><code>(*6)Tupple:\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3084\u30d5\u30a1\u30a4\u30eb\u3067\u3044\u30461\u884c\u30fb1\u30ec\u30b3\u30fc\u30c9\u306e\u30c7\u30fc\u30bf\u306e\u3088\u3046\u306a\u3082\u306e\u3002\r\n\u3064\u307e\u308a\u8907\u6570\u306e\u30c7\u30fc\u30bf\u30921\u3064\u306e\u584a\u3068\u3057\u3066\u6271\u3048\u308b\u3082\u306e\u3002\r\n\u30bf\u30d7\u30eb\u3092\u4f7f\u3063\u3066\u3001\u30e1\u30bd\u30c3\u30c9\u30fb\u95a2\u6570\u304b\u3089\u8907\u6570\u306e\u5024\u3092\u4e00\u5ea6\u306b\u8fd4\u3059\u3053\u3068\u304c\u51fa\u6765\u308b\u306e\u3067\u3001\u975e\u5e38\u306b\u4fbf\u5229\u3089\u3057\u3044\u3002\r\n<\/code><\/pre>\n<hr \/>\n<h2>Spark\u5904\u7406\u7684\u6d41\u7a0b[\u8865\u5145\u8bf4\u660e]<\/h2>\n<h4>\u4e00. \u5c06\u7cfb\u8c31\u5206\u5272\u5230\u4e0d\u540c\u7684\u9636\u6bb5<\/h4>\n<p>DAGScheduler\u304c\u3001\u7cfb\u8b5c\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u306b\u5206\u5272\u3059\u308b<br \/>\n\u30b9\u30c6\u30fc\u30b8\u306f\u7cfb\u8b5c\u4e2d\u3067\u72ed\u3044\u4f9d\u5b58\u95a2\u4fc2\u304c\u9023\u7d9a\u3057\u3066\u767a\u751f\u3059\u308b\u7bc4\u56f2(\u4f9d\u5b58\u95a2\u4fc2\u306e\u7a2e\u985e\u306f\u5909\u63db\u306e\u7a2e\u985e\u3067\u304d\u307e\u308b)<br \/>\n\u7cfb\u8b5c\u4e2d\u3067\u5e83\u3044\u4f9d\u5b58\u95a2\u4fc2\u304c\u767a\u751f\u3059\u308b\u5909\u63db\u95a2\u6570\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u306f\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u9593\u3067\u30b7\u30e3\u30c3\u30d5\u30eb\u3068\u547c\u3070\u308c\u308b\u591a\u6570\u5bfe\u591a\u6570\u306e\u901a\u4fe1\u304c\u767a\u751f\u3059\u308b\u3002<br \/>\n\u3053\u306e\u5206\u5272\u306f\u3001\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u3054\u3068\u306b\u4e00\u3064\u306e\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u304c\u307e\u3068\u3081\u3066\u8a08\u7b97\u3067\u304d\u308b\u5909\u63db\u306e\u7bc4\u56f2\u3092\u6c7a\u3081\u308b\u305f\u3081<\/p>\n<h5>\u5173\u4e8e\u6570\u636e\u5206\u533a\u7684\u4e8b\u9879<\/h5>\n<blockquote><p>\u5728\u5206\u6563\u5f0f\u7a0b\u5f0f\u4e2d\uff0c\u901a\u8a0a\u975e\u5e38\u6602\u8cb4\uff0c\u5c07\u7db2\u7d61\u6d41\u91cf\u964d\u5230\u6700\u4f4e\u9650\u5ea6\u53ef\u5927\u5e45\u6539\u5584\u6548\u80fd\u3002<br \/>\nSpark\u7a0b\u5f0f\u9700\u8981\u63a7\u5236RDD\u7684\u5206\u5340\uff0c\u4ee5\u6e1b\u5c11\u901a\u8a0a\u91cf\u3002<\/p><\/blockquote>\n<p>\u4f8b\u5982\uff0cSpark\u53ef\u4ee5\u901a\u8fc7\u7f16\u7a0b\u4fdd\u8bc1\u952e\u96c6\u5408\u51fa\u73b0\u5728\u5f52\u4e3a\u4e00\u7ec4\u7684\u8282\u70b9\u4e0a\u3002\u5c24\u5176\u662f\u5728\u6570\u636e\u96c6\u88ab\u91cd\u590d\u4f7f\u7528\u591a\u6b21\u8fdb\u884c\u952e\u64cd\u4f5c\u7684\u60c5\u51b5\u4e0b\uff0c\u5206\u533a\u64cd\u4f5c\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\u5408\u5e76\u64cd\u4f5c\u7b49\u3002\u56e0\u4e3aSpark\u7684\u8bb8\u591a\u64cd\u4f5c\u90fd\u4f1a\u5728\u7f51\u7edc\u4e0a\u5f15\u53d1\u57fa\u4e8e\u952e\u7684\u6d17\u724c\u64cd\u4f5c\uff0c\u5b83\u4eec\u90fd\u53ef\u4ee5\u53d7\u76ca\u4e8e\u5206\u533a\u64cd\u4f5c\u3002<\/p>\n<blockquote><p>\u5728Java\u6216Scala\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528partitioner\u5c5e\u6027\u6765\u6307\u5b9aRDD\u7684\u5206\u533a\u65b9\u5f0f\u3002\u5728\u8fd9\u91cc\uff0c\u5c06`spark.Partitioner`\u5bf9\u8c61\u7684\u503c\u8bbe\u7f6e\u4e3a\u4e00\u4e2a\u80fd\u544a\u77e5RDD\u4e2d\u6bcf\u4e2a\u952e\u7684\u76ee\u7684\u5206\u533a\u7684\u5bf9\u8c61\u3002<\/p>\n<p>\u5f53\u5728\u5206\u533a\u5316\u7684RDD\u4e0a\u6267\u884c\u50cfreduceByKey()\u8fd9\u6837\u9488\u5bf9\u5355\u4e2aRDD\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u6bcf\u4e2a\u952e\u7684\u6240\u6709\u503c\u90fd\u4f1a\u5728\u4e00\u4e2a\u5355\u72ec\u7684\u673a\u5668\u4e0a\u672c\u5730\u8ba1\u7b97\uff0c\u5e76\u4e14\u53ea\u6709\u7ecf\u8fc7\u672c\u5730reduce()\u64cd\u4f5c\u540e\u7684\u6700\u7ec8\u503c\u4f1a\u4ece\u6bcf\u4e2a\u5de5\u4f5c\u8282\u70b9\u8fd4\u56de\u7ed9\u4e3b\u8282\u70b9\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u5728\u5bf9\u4e24\u4e2aRDD\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u5982\u679c\u9884\u5148\u8fdb\u884c\u4e86\u5206\u533a\uff0c\u81f3\u5c11\u4f1a\u6709\u5176\u4e2d\u4e00\u4e2aRDD\u4e0d\u4f1a\u88ab\u6d17\u724c\u3002<\/p>\n<p>\u4ee4\u4eba\u60ca\u8bb6\u7684\u662f\uff0cSpark\u77e5\u9053\u6bcf\u4e2a\u64cd\u4f5c\u5bf9\u5206\u533a\u5316\u7684\u5f71\u54cd\uff0c\u56e0\u6b64\u4f1a\u81ea\u52a8\u4e3a\u901a\u8fc7\u8fdb\u884c\u6570\u636e\u5206\u533a\u64cd\u4f5c\u751f\u6210\u7684RDD\u8bbe\u7f6epartitioner\u3002<\/p>\n<p>\u8865\u5145\u8bf4\u660e\uff0c\u5982\u679c\u8981\u5bf9RDD\u8fdb\u884c\u5206\u533a\uff0c\u5e76\u5c06\u751f\u6210\u7684RDD\u4f5c\u4e3a\u8f6c\u6362\u7684\u76ee\u6807\uff0c\u5219\u5e94\u4f7f\u7528persist()\u8fdb\u884c\u6301\u4e45\u5316\u3002\u539f\u56e0\u662f\uff0c\u4e4b\u540e\u5bf9RDD\u7684\u64cd\u4f5c\u5c06\u9700\u8981\u91cd\u65b0\u8bc4\u4f30\u4f7f\u7528\u5206\u533a\u751f\u6210\u7684\u6574\u4e2aRDD\u4f53\u7cfb\uff0c\u56e0\u6b64\u5728\u5206\u533a\u4e4b\u524d\u5bf9RDD\u8fdb\u884c\u591a\u6b21\u54c8\u5e0c\u5206\u533a\u5c06\u53d8\u5f97\u6beb\u65e0\u610f\u4e49\u3002<\/p><\/blockquote>\n<h4>\u5224\u65ad\u662f\u5426\u6267\u884c\u9636\u6bb5<\/h4>\n<p>Spark\u3067\u306f\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u3067\u5236\u5fa1\u3055\u308c\u3066\u308b\u8907\u6570\u306e\u30b8\u30e7\u30d6\u3067\u540c\u3058RDD\u3092\u5171\u6709\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b<br \/>\n\u5171\u6709\u3057\u3066\u3044\u308bRDD\u304c\u3059\u3067\u306b\u8a08\u7b97\u6e08\u307f\u3067\u3001\u30c7\u30a3\u30b9\u30af\u3084\u30e1\u30e2\u30ea\u306b\u5b9f\u614b\u3092\u6301\u3064\u5834\u5408\u3001\u305d\u306eRDD\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u306e\u524d\u6bb5\u306e\u30b9\u30c6\u30fc\u30b8\u5b9f\u884c\u3092\u7701\u7565\u3067\u304d\u308b<\/p>\n<h4>\u2162. \u521b\u5efa\u4efb\u52a1<\/h4>\n<p>DAGScheduler\u304c\u5b9f\u884c\u5bfe\u8c61\u306e\u500b\u3005\u306e\u30b9\u30c6\u30fc\u30b8\u306b\u3064\u3044\u3066\u30bf\u30b9\u30af\u3092\u5b9a\u7fa9\u3059\u308b<br \/>\n\u5404\u30b9\u30c6\u30fc\u30b8\u306b\u304a\u3044\u3066\u3001\u30b9\u30c6\u30fc\u30b8\u5185\u306e\u6700\u5f8c\u306eRDD\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u6570\u304b\u3089\u5f53\u8a72\u30b9\u30c6\u30fc\u30b8\u306e\u30bf\u30b9\u30af\u6570\u304c\u6c7a\u307e\u308b<br \/>\n\u30b9\u30c6\u30fc\u30b8\u306b\u542b\u307e\u308c\u308bRDD\u306e\u5909\u63db\u30c1\u30a7\u30a4\u30f3\u304b\u3089\u3001\u30bf\u30b9\u30af\u3042\u305f\u308a\u306e\u51e6\u7406\u7bc4\u56f2\u304c\u6c7a\u307e\u308b<\/p>\n<h4>\u2163. \u51b3\u5b9a\u6267\u884c\u4efb\u52a1\u7684\u4f4d\u7f6e\u3002<\/h4>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d7\u30ea\u30d5\u30a1\u30fc\u30c9\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u304cRDD\u306b\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u305d\u308c\u3092\u30d2\u30f3\u30c8\u306b\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u3092\u9078\u3076<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u306a\u3044\u5834\u5408\u306f\u89aa\u3092\u305f\u3069\u3063\u3066\u6700\u521d\u306b\u898b\u3064\u304b\u3063\u305f\u3082\u306e\u3092\u4f7f\u3046<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d7\u30ea\u30d5\u30a1\u30fc\u30c9\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306fRDD\u306e\u7a2e\u985e\u3054\u3068\u306b\u5b9a\u7fa9\u3055\u308c\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u3092\u3082\u3068\u306b\u7570\u6027\u3055\u308c\u308bRDD\u306f\u30d7\u30ea\u30d5\u30a1\u30fc\u30c9\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u6301\u3064\u306e\u3067<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u3044\u3064\u304b\u306f\u30d7\u30ea\u30d5\u30a1\u30fc\u30c9\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u898b\u3064\u304b\u308b<\/ul>\n<h4>\u2164. \u5b89\u6392\u4efb\u52a1\u7684\u6267\u884c\u987a\u5e8f<\/h4>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b9\u30c6\u30fc\u30b8\u3092\u69cb\u7bc9\u3059\u308b\u30bf\u30b9\u30af\u7fa4\u306f\u300c\u30bf\u30b9\u30af\u30bb\u30c3\u30c8\u300d\u3068\u3057\u3066TaskScheduler\u306b\u6e21\u3055\u308c\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>TaskScheduler\u306f\u30bf\u30b9\u30af\u30bb\u30c3\u30c8\u5358\u4f4d\u3067\u5b9f\u884c\u9806\u5e8f\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3092\u884c\u3046\u3002<\/p>\n<p>TaskScheduler\u306f\u30bf\u30b9\u30af\u30bb\u30c3\u30c8\u306e\u5b9f\u884c\u9806\u5e8f\u3092\u6c7a\u5b9a\u3059\u308b\u307e\u3067\u306b\u3001\u30bf\u30b9\u30af\u30bb\u30c3\u30c8\u3092\u767b\u9332\u3057\u3066\u304a\u304f\u300c\u30d7\u30fc\u30eb\u300d\u3092\u4e00\u3064\u4ee5\u4e0a\u4fdd\u6301\u3002\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u65b9\u6cd5\u306b\u3088\u3063\u3066\u30d7\u30fc\u30eb\u306e\u6570\u3084\u4f7f\u3044\u65b9\u304c\u7570\u306a\u308b<br \/>\n\u6a19\u6e96\u3067\u4e8c\u3064\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u65b9\u304c\u3042\u308b<\/p>\n<div>\n<div class=\"post-table\">\u540d\u79f0\u8aac\u660eFIFO\u5358\u4e00\u306e\u30d7\u30fc\u30eb\u3092\u7528\u3044\u3066\u3001\u30ad\u30e5\u30fc\u306e\u3088\u3046\u306b\u6271\u3046\u3002\u30d7\u30fc\u30eb\u306b\u767b\u9332\u3055\u308c\u305f\u30bf\u30b9\u30af\u30bb\u30c3\u30c8\u3092\u9806\u306b\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3059\u308bFAIR\u8907\u6570\u306e\u30d7\u30fc\u30eb\u3092\u7528\u3044\u3066\u3001\u5404\u30d7\u30fc\u30eb\u304b\u3089\u516c\u5e73\u306b\u30a2\u30b9\u30af\u30bb\u30c3\u30c8\u3092\u53d6\u308a\u51fa\u3057\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3059\u308b<\/div>\n<\/div>\n<h4>\u5173\u952e\u8bcd<\/h4>\n<div>\n<div class=\"post-table\">\u30ad\u30fc\u30ef\u30fc\u30c9\u8aac\u660e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b8\u30e7\u30d6\u306e\u30ad\u30c3\u30af\u3092\u62c5\u5f53\u30de\u30b9\u30bf\u30b8\u30e7\u30d6\u306e\u30ad\u30c3\u30af\u3092\u62c5\u5f53\u30ef\u30fc\u30ab\u8a08\u7b97\u8cc7\u6e90\u306e\u63d0\u4f9b\u30fb\u7ba1\u7406\u3092\u62c5\u5f53\u30c9\u30e9\u30a4\u30d0\u30e6\u30fc\u30b6\u304c<code>RDD<\/code>\u306e\u5909\u63db\u3092\u8a18\u8ff0\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u30fc\u30ef\u30fc\u30ab\u30fc\u4e0a\u3067\u52d5\u4f5c\u3057\u3001\u5b9f\u969b\u306e\u8a08\u7b97\u3092\u62c5\u5f53\u30b8\u30e7\u30d6Spark\u306e\u51e6\u7406\u5185\u3067\u30a2\u30af\u30b7\u30e7\u30f3\u7cfb\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u30b8\u30e7\u30d6\u304c\u4f5c\u6210\u3055\u308c\u308b\u3002<code>Spark<\/code>\u3067\u306f<code>RDD<\/code>\u3068\u547c\u3070\u308c\u308b\u62bd\u8c61\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u5909\u63db\u3092\u7e70\u308a\u8fd4\u3057\u3066\u76ee\u7684\u306e\u7d50\u679c\u3092\u5f97\u308b\u3002\u3053\u306e\u4e00\u9023\u306e\u51e6\u7406\u3092\u30b8\u30e7\u30d6\u3068\u3044\u3046\u30b9\u30c6\u30fc\u30b8\u30b8\u30e7\u30d6\u306f\u30c7\u30fc\u30bf\u306e\u30b7\u30e3\u30c3\u30d5\u30eb\u304c\u5fc5\u8981\u306a\u5834\u5408\u306b\u8907\u6570\u306e\u30b9\u30c6\u30fc\u30b8\u306b\u5206\u5272\u3055\u308c\u308b\u30bf\u30b9\u30af\u30b8\u30e7\u30d6\u3092\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u30fc\u304c\u5b9f\u884c\u53ef\u80fd\u306a\u7c92\u5ea6\u306b\u5206\u5272\u3057\u305f\u51e6\u7406\u5358\u4f4d\u3002\u30b9\u30c6\u30fc\u30b8\u306f\u8907\u6570\u306e\u30bf\u30b9\u30af\u3092\u6301\u3061\u3001\u30ef\u30fc\u30ab\u30fc\u306b\u5bfe\u3057\u3066\u9001\u3089\u308c\u308b\u4e26\u5217\u5b9f\u884c\u53ef\u80fd\u306a\u51e6\u7406\u3092\u30bf\u30b9\u30af\u3068\u3044\u3046\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u30b8\u30e7\u30d6\u3092\u30bf\u30b9\u30af\u306b\u5206\u5272\u3057\u305f\u308a\u3001\u30bf\u30b9\u30af\u306e\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u3078\u306e\u5272\u308a\u5f53\u3066\u3092\u62c5\u5f53<\/div>\n<\/div>\n<p>\u6211\u5728\u4ee5\u4e0b\u7684\u7f51\u7ad9\u4e0a\u627e\u5230\u4e86\u975e\u5e38\u8be6\u7ec6\u7684\u8d44\u6599\uff0c\u53c2\u8003\u4e86\u5b83\u4eec\uff1a<br \/>\nhttp:\/\/www.ne.jp\/asahi\/hishidama\/home\/tech\/scala\/spark\/RDD.html<br \/>\nhttp:\/\/dev.classmethod.jp\/etc\/apache-spark_rdd_investigation\/<br \/>\n<iframe loading=\"lazy\" title=\"Apache Spark\u306e\u3054\u7d39\u4ecb \uff08\u5f8c\u534a\uff1a\u6280\u8853\u30c8\u30d4\u30c3\u30af\uff09\" src=\"https:\/\/www.slideshare.net\/slideshow\/embed_code\/key\/eI2szoBGYnUfuE\" width=\"427\" height=\"356\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" style=\"border:1px solid #CCC; border-width:1px; margin-bottom:5px; max-width: 100%;\" allowfullscreen> <\/iframe> <\/p>\n<div style=\"margin-bottom:5px\"> <strong> <a href=\"https:\/\/www.slideshare.net\/slideshow\/apache-spark\/35286652\" title=\"Apache Spark\u306e\u3054\u7d39\u4ecb \uff08\u5f8c\u534a\uff1a\u6280\u8853\u30c8\u30d4\u30c3\u30af\uff09\" target=\"_blank\">Apache Spark\u306e\u3054\u7d39\u4ecb \uff08\u5f8c\u534a\uff1a\u6280\u8853\u30c8\u30d4\u30c3\u30af\uff09<\/a> <\/strong> from <strong><a href=\"https:\/\/www.slideshare.net\/hadoopxnttdata\" target=\"_blank\">NTT DATA OSS Professional Services<\/a><\/strong> <\/div>\n<h2>\u8cc7\u6599\u7684\u8f38\u5165\/\u8f38\u51fa[\u88dc\u5145].<\/h2>\n<h3>\u52a0\u8f7d\u548c\u4fdd\u5b58\u6587\u4ef6<\/h3>\n<p>\u5728bin \/ data\u6587\u4ef6\u5939\u4e2d\uff0c\u53ef\u4ee5\u5c06\u7c7b\u4f3c\u4ee5\u4e0b\u7684JSON\u6587\u4ef6\u6279\u91cf\u52a0\u8f7d\u4e3a\u4e00\u4e2aRDD\u3002\uff08\u8fd9\u91cc\u6ca1\u6709\u6d89\u53caJSON\u7684\u5904\u7406\uff0c\u4f46\u662f\u53ef\u4ee5\u4f7f\u7528Java\u7684JSON\u5e93\uff0c\u4f8b\u5982https:\/\/github.com\/FasterXML\/jackson\uff0c\u5373\u4f7f\u662f\u4f7f\u7528\u8be5\u5e93\uff0c\u4e5f\u9700\u8981\u9996\u5148\u5c06\u5176\u4f5c\u4e3a\u6587\u672c\u52a0\u8f7d\u7136\u540e\u518d\u8fdb\u884c\u5904\u7406\u3002\uff09<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/116-0.png\" alt=\"SaveFileSample.java - SparkTest - [~_Desktop_SORACOM_SoraPractice_IntelliJPractice].png\" \/><\/div>\n<p>\u672c\u6b21\u4f5c\u4e3a\u4f8b\u5b50\uff0c\u5df2\u7ecf\u51c6\u5907\u4e86\u901a\u8fc7Twitter\u7684RESTApi\u83b7\u53d6\u76846\u4e2a\u8d26\u6237\u6700\u8fd1\u53d1\u5e03\u7684200\u6761\u63a8\u6587\u6570\u636e\u7684json\u6587\u4ef6\u3002<\/p>\n<p>\u6211\u4ece\u90a3\u4e9b\u63a8\u6587\u7684JSON\u6587\u4ef6\u4e2d\u63d0\u53d6\u4e86\u53ea\u5305\u542b\u63a8\u6587\u6587\u672c\u884c\u7684\u90e8\u5206\uff08input.filter(s -&gt; s.contains(&#8220;\\&#8221;text\\&#8221;:&#8221;))\uff09\uff0c\u5e76\u53ea\u4fdd\u7559\u4e86\u5176\u4e2d\u5305\u542b\u201c\u7b11\u201d\u7684\u6587\u672c\u3002\u6700\u540e\uff0c\u6211\u5c06\u7ed3\u679c\u5199\u5165\u540d\u4e3aresult\/output01\u7684\u76ee\u5f55\u4e2d\u3002<br \/>\n\u5728\u8fd9\u91cc\uff0csaveAsTextFile()\u65b9\u6cd5\u7684\u53c2\u6570\u8def\u5f84\u88ab\u89c6\u4e3a\u4e00\u4e2a\u76ee\u5f55\uff0cSpark\u5c06\u5728\u5176\u4e2d\u8f93\u51fa\u591a\u4e2a\u6587\u4ef6\u3002\u8fd9\u6837\u505a\u53ef\u4ee5\u4f7fSpark\u4ece\u591a\u4e2a\u8282\u70b9\u8f93\u51fa\u7ed3\u679c\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/119-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-09-29 15.54.50.png\" \/><\/div>\n<p>\u7ed3\u679c\u5982\u4e0a\u6240\u793a\uff0c\u9488\u5bf9\u6bcf\u4e2ajson\u6587\u4ef6\u4e5f\u751f\u6210\u4e86\u76f8\u5e94\u7684\u7ed3\u679c\u6587\u4ef6\u3002<br \/>\n\u5173\u4e8epart-00000\uff0c\u65e0\u6cd5\u6253\u5f00\u8be5\u6587\u4ef6\uff0c\u53ef\u80fd\u662f\u56e0\u4e3a\u6ca1\u6709\u8981\u8f93\u51fa\u7684\u5185\u5bb9\uff08\u4e0d\u5305\u542b\u201c\u7b11\u201d\uff09\u3002<\/p>\n<p>\u6700\u540e\u6211\u4f1a\u9644\u4e0a\u8fd9\u6bb5\u6e90\u4ee3\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">org.apache.spark.api.java.JavaRDD<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">org.apache.spark.api.java.JavaSparkContext<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"cm\">\/**\r\n * Created by hirokinaganuma on 2016\/09\/29.\r\n *\/<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">TwitterSample<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">Exception<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">String<\/span> <span class=\"n\">inputFile<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"bin\/data\/*.json\"<\/span><span class=\"o\">;<\/span><span class=\"c1\">\/\/\u307e\u3068\u3081\u3066\u8aad\u307f\u8fbc\u3080\u3053\u3068\u3082\u53ef\u80fd<\/span>\r\n        <span class=\"nc\">String<\/span> <span class=\"n\">outputPath<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"result\/output01\"<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"nc\">String<\/span> <span class=\"n\">master<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">args<\/span><span class=\"o\">.<\/span><span class=\"na\">length<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">0<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"n\">master<\/span> <span class=\"o\">=<\/span> <span class=\"n\">args<\/span><span class=\"o\">[<\/span><span class=\"mi\">0<\/span><span class=\"o\">];<\/span>\r\n        <span class=\"o\">}<\/span> <span class=\"k\">else<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"n\">master<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"local\"<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"o\">}<\/span>\r\n        <span class=\"nc\">JavaSparkContext<\/span> <span class=\"n\">sc<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">JavaSparkContext<\/span><span class=\"o\">(<\/span><span class=\"n\">master<\/span><span class=\"o\">,<\/span> <span class=\"s\">\"basicavg\"<\/span><span class=\"o\">,<\/span> <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">getenv<\/span><span class=\"o\">(<\/span><span class=\"s\">\"SPARK_HOME\"<\/span><span class=\"o\">),<\/span> <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">getenv<\/span><span class=\"o\">(<\/span><span class=\"s\">\"JARS\"<\/span><span class=\"o\">));<\/span>\r\n        <span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">input<\/span> <span class=\"o\">=<\/span> <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">textFile<\/span><span class=\"o\">(<\/span><span class=\"n\">inputFile<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">JavaRDD<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">output<\/span> <span class=\"o\">=<\/span> <span class=\"n\">input<\/span><span class=\"o\">.<\/span><span class=\"na\">filter<\/span><span class=\"o\">(<\/span><span class=\"n\">s<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"n\">s<\/span><span class=\"o\">.<\/span><span class=\"na\">contains<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\\\"text\\\":\"<\/span><span class=\"o\">)).<\/span><span class=\"na\">filter<\/span><span class=\"o\">(<\/span><span class=\"n\">s<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"n\">s<\/span><span class=\"o\">.<\/span><span class=\"na\">contains<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u7b11\"<\/span><span class=\"o\">));<\/span>\r\n        <span class=\"n\">output<\/span><span class=\"o\">.<\/span><span class=\"na\">saveAsTextFile<\/span><span class=\"o\">(<\/span><span class=\"n\">outputPath<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"n\">sc<\/span><span class=\"o\">.<\/span><span class=\"na\">stop<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u6587\u4ef6\u538b\u7f29<br \/>\nSpark\u5728\u8f93\u5165\u683c\u5f0f\uff08\u5982textFile()\uff09\u7b49\u4e00\u4e9b\u8f93\u5165\u683c\u5f0f\u4e2d\uff0c\u4f1a\u81ea\u52a8\u5904\u7406\u51e0\u79cd\u7c7b\u578b\u7684\u538b\u7f29\uff0c\u4ee5\u8282\u7ea6\u5b58\u50a8\u7a7a\u95f4\u548c\u964d\u4f4e\u901a\u4fe1\u6210\u672c\u3002\u4f46\u662f\u8fd9\u4e9b\u538b\u7f29\u53ea\u80fd\u7528\u4e8e\u5199\u5165\u6587\u4ef6\u7cfb\u7edf\uff0c\u65e0\u6cd5\u4eceSpark\u7aef\u7528\u4e8e\u6570\u636e\u5e93\u7b49\u5176\u4ed6\u7528\u9014\u3002<br \/>\n\u53e6\u5916\uff0c\u6839\u636e\u538b\u7f29\u683c\u5f0f\u7684\u4e0d\u540c\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u4e0d\u80fd\u4ece\u591a\u4e2a\u5de5\u4f5c\u8282\u70b9\u8bfb\u53d6\u7684\u60c5\u51b5\uff08\u6709\u4e00\u4e9b\u9650\u5236\uff0c\u6bd4\u5982\u5fc5\u987b\u4ece\u5934\u5f00\u59cb\u8bfb\u53d6\uff09\uff0c\u8fd9\u5c06\u6210\u4e3a\u74f6\u9888\u3002\u80fd\u4ece\u591a\u4e2a\u5de5\u4f5c\u8282\u70b9\u8bfb\u53d6\u7684\u683c\u5f0f\u79f0\u4e3a\u201c\u53ef\u5206\u5272\u201d\u683c\u5f0f\u3002<\/p>\n<hr \/>\n<h2>2. \u652f\u6301Scala\u3001Java\u3001R\u3001Python\u7b49\u7f16\u7a0b\u8bed\u8a00\uff08\u5177\u5907API\uff09<\/h2>\n<p>\u8fd9\u662f\u5b57\u9762\u4e0a\u7684\u610f\u601d\u3002<br \/>\n\u901a\u8fc7\u652f\u6301\u5404\u79cd\u4e0d\u540c\u7684\u8bed\u8a00\uff0c\u5e76\u4e14\u5bb9\u6613\u96c6\u6210\u7b2c\u4e09\u65b9\u5e93\u4e5f\u53d8\u5f97\u66f4\u52a0\u4fbf\u6377\u3002<\/p>\n<h2>3. \u4e30\u5bcc\u591a\u6837\u7684\u5e93<\/h2>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/128-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-09-09 16.01.06.png\" \/><\/div>\n<p>Spark SQL: \u69cb\u9020\u5316\u30c7\u30fc\u30bf\u3084\u8868\u5f62\u5f0f\u30c7\u30fc\u30bf\u3092\u6271\u3046<\/p>\n<p>Spark Streaming: \u307b\u307c\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u30b9\u30c8\u30ea\u30fc\u30e0\u30fb\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b<\/p>\n<p>MLlib: \u6a5f\u68b0\u5b66\u7fd2\u3092\u884c\u3046(\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u3057\u3066spark.mllib\u3068spark.ml\u304c\u3042\u308b\u304c\u524d\u8005\u304c\u975e\u63a8\u5968\u306b\u306a\u3063\u305f\u6a21\u69d8)<\/p>\n<p>GraphX: \u30b0\u30e9\u30d5\u51e6\u7406\u3092\u884c\u3046<\/p>\n<h2>4. \u591a\u79cd\u5f15\u5165\u573a\u666f\uff08\u72ec\u7acb\u3001YARN\u3001Mesos\u3001\u5185\u5d4c\u3001\u4e91\u7aef\uff09<\/h2>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/131-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-09-09 16.01.41.png\" \/><\/div>\n<p>Apache Mesos\u4e5f\u5f97\u5230\u652f\u6301\uff0c\u4f46\u6700\u5e38\u7528\u4e8e\u4f01\u4e1a\u7684\u662fHadoop YARN\uff08Hadoop\u7684\u6838\u5fc3\u7ec4\u4ef6\uff09\uff0c\u6211\u4eec\u5f53\u7136\u4e5f\u652f\u6301\u5b83\u3002<br \/>\n\u6b64\u5916\uff0cSpark\u63d0\u4f9b\u4e86\u96c6\u6210\u7684\u5c0f\u89c4\u6a21\u72ec\u7acb\u7fa4\u96c6\u7cfb\u7edf\uff0c\u79f0\u4e3aSpark Standalone\uff0c\u975e\u5e38\u9002\u5408\u90e8\u7f72\u5c0f\u89c4\u6a21\u7fa4\u96c6\u7684\u6d4b\u8bd5\u7b49\u7528\u9014\u3002<\/p>\n<p>\u5728\u5206\u6563\u6a21\u5f0f\u4e0b\uff0cSpark\u91c7\u7528\u4e00\u79cd\u4e3b\/\u4ece\u67b6\u6784\uff0c\u5176\u4e2d\u5305\u62ec\u4e00\u4e2a\u4e2d\u592e\u534f\u8c03\u5668\uff08\u9a71\u52a8\u7a0b\u5e8f\uff09\u548c\u591a\u4e2a\u5206\u5e03\u5f0f\u5de5\u4f5c\u8005\uff08\u6267\u884c\u5668\uff09\u3002\u9a71\u52a8\u7a0b\u5e8f\u4ee5\u72ec\u7acb\u7684Java\u8fdb\u7a0b\u8fd0\u884c\uff0c\u6bcf\u4e2a\u6267\u884c\u5668\u4e5f\u4ee5\u72ec\u7acb\u7684Java\u8fdb\u7a0b\u8fd0\u884c\u3002\u8fd9\u4e2a\u9a71\u52a8\u7a0b\u5e8f\u548c\u6267\u884c\u5668\u7ec4\u5408\u5728\u4e00\u8d77\u88ab\u79f0\u4e3aSpark\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/134-0.png\" alt=\"image\" \/><\/div>\n<p>\u5982\u4e0a\u56fe\u6240\u793a\uff0cSpark\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u79f0\u4e3a\u96c6\u7fa4\u7ba1\u7406\u5668\u7684\u5916\u90e8\u670d\u52a1\u5728\u591a\u53f0\u8ba1\u7b97\u673a\u4e0a\u542f\u52a8\u3002\u5728\u6b64\u8fc7\u7a0b\u4e2d\uff0c\u5e94\u7528\u7a0b\u5e8f\u901a\u8fc7spark-submit\u547d\u4ee4\u8fdb\u884c\u63d0\u4ea4\u3002\u8be5\u547d\u4ee4\u4f1a\u542f\u52a8\u9a71\u52a8\u7a0b\u5e8f\uff0c\u5e76\u8c03\u7528\u7528\u6237\u6307\u5b9a\u7684main()\u65b9\u6cd5\u3002\u7136\u540e\u9a71\u52a8\u7a0b\u5e8f\u8fde\u63a5\u5230\u96c6\u7fa4\u7ba1\u7406\u5668\uff0c\u5e76\u8bf7\u6c42\u8d44\u6e90\u4ee5\u542f\u52a8\u6267\u884c\u5668\u3002\u968f\u540e\uff0c\u96c6\u7fa4\u7ba1\u7406\u5668\u4ee5\u9a71\u52a8\u7a0b\u5e8f\u7684\u4ee3\u7406\u8eab\u4efd\u542f\u52a8\u6267\u884c\u5668\u3002\u9a71\u52a8\u7a0b\u5e8f\u6267\u884c\u7528\u6237\u5e94\u7528\u7a0b\u5e8f\uff0c\u5e76\u6839\u636e\u7a0b\u5e8f\u4e2d\u7684RDD\u8f6c\u6362\u548c\u64cd\u4f5c\u5c06\u4efb\u52a1\u4ee5\u4efb\u52a1\u7684\u5f62\u5f0f\u53d1\u9001\u7ed9\u6267\u884c\u5668\u8fdb\u884c\u5904\u7406\u3002\u4efb\u52a1\u5728\u6267\u884c\u5668\u8fdb\u7a0b\u4e2d\u6267\u884c\u5e76\u4fdd\u5b58\u8ba1\u7b97\u7ed3\u679c\u3002\u6700\u540e\uff0c\u5f53\u9a71\u52a8\u7a0b\u5e8f\u7684main()\u65b9\u6cd5\u9000\u51fa\u6216\u8005\u8c03\u7528\u4e86SparkContext.stop()\u65f6\uff0c\u9a71\u52a8\u7a0b\u5e8f\u505c\u6b62\u6267\u884c\u5668\u5e76\u91ca\u653e\u4ece\u96c6\u7fa4\u7ba1\u7406\u5668\u83b7\u53d6\u7684\u8d44\u6e90\u3002\u8fd9\u5c31\u662f\u4e00\u7cfb\u5217Spark\u5e94\u7528\u7a0b\u5e8f\u7684\u6d41\u7a0b\u3002<\/p>\n<h3>\u53f8\u673a<\/h3>\n<p>\u6267\u884c\u5305\u542b\u4e3b\u51fd\u6570\u7684\u7a0b\u5e8f\u7684\u8fdb\u7a0b\u3002\u5c06\u751f\u6210SparkContext\u548cRDD\uff0c\u5e76\u8d1f\u8d23\u6267\u884c\u8f6c\u6362\u548c\u64cd\u4f5c\u3002<br \/>\n\u6b64\u5916\uff0c\u5728\u6267\u884c\u7528\u6237\u7a0b\u5e8f\u4efb\u52a1\u7684\u8f6c\u6362\u548c\u6267\u884c\u4efb\u52a1\u8c03\u5ea6\u65b9\u9762\uff0c\u4e5f\u627f\u62c5\u8d23\u4efb\u3002<\/p>\n<p>\u5173\u4e8e\u524d\u8005\uff0c\u5c31Spark\u5904\u7406\u6d41\u7a0b\u800c\u8a00[\u8865\u5145]\/ \u2160. \u5982\u524d\u6240\u8ff0\uff0c\u8fd9\u662f\u5c06\u7528\u6237\u7684\u7a0b\u5e8f\u8f6c\u6362\u4e3a\u4efb\u52a1\u4f5c\u4e3a\u6267\u884c\u5355\u4f4d\u3002Spark\u7a0b\u5e8f\u5305\u62ec\u751f\u6210\u548c\u8f6c\u6362RDD\u4ee5\u53ca\u6267\u884c\u52a8\u4f5c\u7684\u7ed3\u6784\uff0c\u5e76\u751f\u6210\u7531\u6b64\u64cd\u4f5c\u6784\u5efa\u7684\u6709\u5411\u5faa\u73af\u56fe\u3002\u5c06\u6b64\u56fe\u8f6c\u6362\u4e3a\u6700\u4f18\u6267\u884c\u7684\u9636\u6bb5\u96c6\u3002\u5982\u524d\u6240\u8ff0\uff0c\u9636\u6bb5\u96c6\u5305\u542b\u591a\u4e2a\u4efb\u52a1\u3002<\/p>\n<p>\u5173\u4e8e\u540e\u8005\uff0c\u6b63\u5982\u5728IV. \u8c03\u5ea6\u4efb\u52a1\u6267\u884c\u987a\u5e8f\u4e2d\u6240\u793a\uff0cSpark\u7684\u9a71\u52a8\u7a0b\u5e8f\u8d1f\u8d23\u8c03\u6574\u6267\u884c\u8005\u7fa4\u7ec4\u4e2d\u6bcf\u4e2a\u4efb\u52a1\u7684\u8c03\u5ea6\u3002\u6267\u884c\u8005\u7fa4\u7ec4\u5728\u542f\u52a8\u65f6\u5c06\u81ea\u5df1\u6ce8\u518c\u5230\u9a71\u52a8\u7a0b\u5e8f\uff0c\u56e0\u6b64\u9a71\u52a8\u7a0b\u5e8f\u53ef\u4ee5\u59cb\u7ec8\u4e86\u89e3\u5176\u5e94\u7528\u7a0b\u5e8f\u7684\u6267\u884c\u8005\u7684\u60c5\u51b5\u3002<\/p>\n<h3>\u6267\u884c\u8005 zh\u011b)<\/h3>\n<p>Spark\u7684\u6267\u884c\u5668\u662f\u8d1f\u8d23\u6267\u884cSpark\u4f5c\u4e1a\u7684\u6bcf\u4e2a\u4efb\u52a1\u7684\u5de5\u4f5c\u8fdb\u7a0b\u3002\u6267\u884c\u5668\u5728Spark\u5e94\u7528\u7a0b\u5e8f\u542f\u52a8\u65f6\u542f\u52a8\u4e00\u6b21\uff0c\u5e76\u5728\u5e94\u7528\u7a0b\u5e8f\u8fd0\u884c\u671f\u95f4\u901a\u5e38\u6301\u7eed\u8fd0\u884c\u3002\u6b64\u5916\uff0c\u5373\u4f7f\u6267\u884c\u5668\u7fa4\u7ec4\u53d1\u751f\u6545\u969c\uff0cSpark\u5e94\u7528\u7a0b\u5e8f\u4e5f\u53ef\u4ee5\u7ee7\u7eed\u5904\u7406\u3002<\/p>\n<p>\u4e3b\u8981\u6267\u884c\u8005\u7684\u89d2\u8272\u5305\u62ec\u6267\u884c\u6784\u5efa\u5e94\u7528\u7a0b\u5e8f\u4efb\u52a1\u7ec4\u5e76\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9\u9a71\u52a8\u7a0b\u5e8f\uff0c\u4ee5\u53ca\u901a\u8fc7\u88ab\u79f0\u4e3a\u5757\u7ba1\u7406\u5668\u7684\u670d\u52a1\u5728\u6bcf\u4e2a\u6267\u884c\u8005\u5185\u90e8\u63d0\u4f9b\u7528\u6237\u7a0b\u5e8f\u7f13\u5b58\u7684RDD\u7684\u5185\u5b58\u5b58\u50a8\u3002<\/p>\n<h2>5. \u5bbd\u6cdb\u7684\u5904\u7406\u6a21\u578b\uff08\u6279\u5904\u7406\u3001\u4ea4\u4e92\u5f0f\u3001\u6d41\u5f0f\u5904\u7406\uff09<\/h2>\n<p>\u5c24\u5176\u662f\u4ea4\u4e92\u5f0fshell\u975e\u5e38\u65b9\u4fbf\u3002<br \/>\n\u4e0d\u9700\u8981\u6bcf\u6b21\u8fdb\u884c\u6784\u5efa\uff0c\u53ef\u4ee5\u5feb\u901f\u9a8c\u8bc1\u903b\u8f91\u7684\u8bd5\u9a8c\u6027\u7f16\u5199\uff0c\u52a0\u5feb\u6548\u679c\u786e\u8ba4\u5faa\u73af\u3002\u5916\u89c2\u548c\u4f7f\u7528\u65b9\u6cd5\u90fd\u7c7b\u4f3c\u4e8eRuby\u7684irb\u3002<\/p>\n<h1>\u8bd5\u7740\u5b9e\u9645\u8fd0\u884c\u4e00\u4e0b<\/h1>\n<h2>\u73af\u5883\u5efa\u7acb<\/h2>\n<h4>\u6211\u5b89\u88c5\u4e86Oracle Java SE\u3002<\/h4>\n<p>(Note: The translation provided is in Simplified Chinese)<\/p>\n<p>\u5f53\u5207\u6362Java\u7248\u672c\u6216\u5176\u4ed6\u8bbe\u7f6e\u65f6\uff0c\u4ee5\u4e0b\u7f51\u7ad9\u975e\u5e38\u6709\u53c2\u8003\u4ef7\u503c\uff1ahttp:\/\/qiita.com\/yohjizzz\/items\/194973bf2f34608ae85a<\/p>\n<h4>II. \u4e0b\u8f7dApache Spark\u3002<\/h4>\n<p>\u8bf7\u70b9\u51fb\u4ee5\u4e0b\u94fe\u63a5\u4e0b\u8f7d Spark \u7684\u5b89\u88c5\u5305\uff1ahttps:\/\/spark.apache.org\/downloads.html\u3002\u672c\u6b21\u5b89\u88c5\u7684\u7248\u672c\u662f2.0.0\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u624b\u98061 : \u300cChose a Spark release\u300d\u3067\u300c2.0.0 (Jul 26 2016)\u300d\u3092\u9078\u629e\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u624b\u98062 : \u300cChose a package type\u300d\u3067\u300cPre-build for Hadoop 2.7 and later\u300d\u3092\u9078\u629e\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u624b\u98063 : \u300cspark-2.0.0-bin-hadoop2.7.tgz\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u3002<\/ul>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/153-0.png\" alt=\"Downloads | Apache Spark.png\" \/><\/div>\n<p>\u5728\u4e0b\u8f7d\u5b8c\u6210\u540e\uff0c\u60a8\u53ef\u4ee5\u5728\u4efb\u610f\u76ee\u5f55\u4e2d\u8fdb\u884c\u89e3\u538b\uff0c\u5e76\u542f\u52a8spark-2.0.0-bin-hadoop2.7-&gt;bin-&gt;spark-shell\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/155-0.png\" alt=\"_Users_hirokinaganuma_Desktop_SORACOM_Spark_spark-2.0.0-bin-hadoop2.7_bin.png\" \/><\/div>\n<p>\u6210\u529f\u4e4b\u540e\u5e94\u8be5\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u7684\u4e1c\u897f<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/157-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-09-09 15.47.13.png\" \/><\/div>\n<pre class=\"post-pre\"><code>Using Spark<span class=\"s1\">'s default log4j profile: org\/apache\/spark\/log4j-defaults.properties\r\nSetting default log level to \"WARN\".\r\nTo adjust logging level use sc.setLogLevel(newLevel).\r\n[init] error: error while loading &lt;root&gt;, Error accessing \/Volumes\/Transcend\/Hack\/SoraPractice\/spark-2.0.0-bin-hadoop2.7\/jars\/._activation-1.1.1.jar\r\n\r\nFailed to initialize compiler: object java.lang.Object in compiler mirror not found.\r\n** Note that as of 2.8 scala does not assume use of the java classpath.\r\n** For the old behavior pass -usejavacp to scala, or if using a Settings\r\n** object programmatically, settings.usejavacp.value = true.\r\n\r\nFailed to initialize compiler: object java.lang.Object in compiler mirror not found.\r\n** Note that as of 2.8 scala does not assume use of the java classpath.\r\n** For the old behavior pass -usejavacp to scala, or if using a Settings\r\n** object programmatically, settings.usejavacp.value = true.\r\nException in thread \"main\" java.lang.NullPointerException\r\n<\/span><\/code><\/pre>\n<p>\u5982\u679c\u51fa\u73b0\u7c7b\u4f3c\u7684\u60c5\u51b5\uff0c\u53ea\u9700\u5c06PATH\u8bbe\u7f6e\u6b63\u786e\u5373\u53ef\u89e3\u51b3\u95ee\u9898\uff01<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span><span class=\"nb\">cd<\/span>\r\n<span class=\"nv\">$ <\/span>vim .bash_profile\r\n<\/code><\/pre>\n<p>\u6211\u5df2\u7ecf\u5728 .bash_profile \u6587\u4ef6\u4e2d\u4ee5\u4ee5\u4e0b\u7684\u65b9\u5f0f\u8fdb\u884c\u4e86\u8bb0\u5f55\u3002<\/p>\n<pre class=\"post-pre\"><code>export SPARK_HOME=\"spark-2.0.0-bin-hadoop2.7\u307e\u3067\u306epath\"\r\nexport PATH=\"$PATH:$SPARK_HOME\/bin:$SPARK_HOME\/sbin\"\r\n<\/code><\/pre>\n<p>\u6700\u540e<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span><span class=\"nb\">source<\/span> .bash_profile\r\n<\/code><\/pre>\n<p>\u6240\u4ee5\uff0c\u53ea\u9700\u91cd\u65b0\u52a0\u8f7d.bash_profile\u6587\u4ef6\u5373\u53ef\u5b8c\u6210\u3002\u6211\u76f8\u4fe1\u8fd9\u6837\u5c31\u53ef\u4ee5\u542f\u52a8spark-shell\u4e86\u3002<\/p>\n<p>\u76ee\u524d\u4e3a\u6b62\uff0c\u73af\u5883\u642d\u5efa\u5df2\u7ecf\u5b8c\u6210\u3002<\/p>\n<p>\u4f60\u597d\u4e16\u754c\uff01\u6211\u4e5f\u5c1d\u8bd5\u4e86\u7c7b\u4f3c\u7684\u4e1c\u897f\u3002<br \/>\n\u5728\u663e\u793a\u4e3ascala&gt;\u7684\u5730\u65b9\uff0c\u7ee7\u7eed\u8f93\u5165sc&#8230;.\u5e76\u5c1d\u8bd5\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u8f93\u5165\u3002<\/p>\n<pre class=\"post-pre\"><code>scala&gt; sc.parallelize<span class=\"o\">(<\/span>1 to 10,1<span class=\"o\">)<\/span>.map<span class=\"o\">(<\/span>_<span class=\"k\">*<\/span>2<span class=\"o\">)<\/span>.reduce<span class=\"o\">(<\/span>_+_<span class=\"o\">)<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u540e\u5e94\u8be5\u662f\u8fd9\u6837\u7684\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5c061\u523010\u7684\u6570\u5b57\u5206\u522b\u4e58\u4ee52\u5e76\u76f8\u52a0\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/170-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2016-09-09 15.50.38.png\" \/><\/div>\n<h2>2. \u7f51\u9875\u7528\u6237\u754c\u9762<\/h2>\n<p>\u63a5\u4e0b\u6765\u8ba9\u6211\u4eec\u5728\u6d4f\u89c8\u5668\u4e2d\u5c1d\u8bd5\u8bbf\u95ee localhost:8080\u3002<\/p>\n<p>\u90a3\u4e48\u4f60\u5e94\u8be5\u80fd\u591f\u770b\u5230\u5982\u4e0b\u5c4f\u5e55\uff08\u90e8\u5206\u4fe1\u606f\u5df2\u9690\u85cf\uff09\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/174-0.png\" alt=\"Spark Master at spark___Hiroki-no-MacBook-Pro-2.local_7077.png\" \/><\/div>\n<p>\u6211\u5011\u53ef\u4ee5\u901a\u904e\u9019\u500b\u65b9\u4fbf\u7684Web\u7528\u6236\u754c\u9762\u4f86\u67e5\u770bSpark\u8655\u7406\u7684\u72c0\u6cc1\uff0c\u4e26\u4e86\u89e3\u96c6\u7fa4\u548c\u4e3b\u6a5f\u7684\u8a73\u7d30\u4fe1\u606f\u3002<\/p>\n<h2>\u5176\u4ed6<\/h2>\n<div>\n<div class=\"post-table\">\u30ad\u30fc\u30ef\u30fc\u30c9\u8aac\u660e\u30b8\u30e7\u30d6Spark\u306e\u51e6\u7406\u5185\u3067\u30a2\u30af\u30b7\u30e7\u30f3\u7cfb\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u30b8\u30e7\u30d6\u304c\u4f5c\u6210\u3055\u308c\u308b\u3002<code>Spark<\/code>\u3067\u306f<code>RDD<\/code>\u3068\u547c\u3070\u308c\u308b\u62bd\u8c61\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u5909\u63db\u3092\u7e70\u308a\u8fd4\u3057\u3066\u76ee\u7684\u306e\u7d50\u679c\u3092\u5f97\u308b\u3002\u3053\u306e\u4e00\u9023\u306e\u51e6\u7406\u3092\u30b8\u30e7\u30d6\u3068\u3044\u3046\u30b9\u30c6\u30fc\u30b8\u30b8\u30e7\u30d6\u306f\u30c7\u30fc\u30bf\u306e\u30b7\u30e3\u30c3\u30d5\u30eb\u304c\u5fc5\u8981\u306a\u5834\u5408\u306b\u8907\u6570\u306e\u30b9\u30c6\u30fc\u30b8\u306b\u5206\u5272\u3055\u308c\u308b\u30bf\u30b9\u30af\u30b9\u30c6\u30fc\u30b8\u306f\u8907\u6570\u306e\u30bf\u30b9\u30af\u3092\u6301\u3061\u3001\u30ef\u30fc\u30ab\u30fc\u306b\u5bfe\u3057\u3066\u9001\u3089\u308c\u308b\u4e26\u5217\u5b9f\u884c\u53ef\u80fd\u306a\u51e6\u7406\u3092\u30bf\u30b9\u30af\u3068\u3044\u3046<\/div>\n<\/div>\n<h1>\u5c0f\u8d34\u58eb<\/h1>\n<h3>1. \u542f\u52a8\u96c6\u7fa4\u65f6<\/h3>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>sbin\/start-all.sh\r\nstarting org.apache.spark.deploy.master.Master, logging to \/Users\/hirokinaganuma\/Desktop\/Hoge\/SoraPractice\/spark-2.0.0-bin-hadoop2.7\/logs\/spark-hirokinaganuma-org.apache.spark.deploy.master.Master-1-Hiroki-no-MacBook-Pro-2.local.out\r\nfailed to launch org.apache.spark.deploy.master.Master:\r\n  \/Users\/hirokinaganuma\/Desktop\/Hoge\/SoraPractice\/spark-2.0.0-bin-hadoop2.7\/bin\/spark-class: line 71: \/Library\/Java\/JavaVirtualMachines\/jdk1.8.0_101.jdk\/bin\/java: No such file or directory\r\nfull log <span class=\"k\">in<\/span> \/Users\/hirokinaganuma\/Desktop\/Hoge\/SoraPractice\/spark-2.0.0-bin-hadoop2.7\/logs\/spark-hirokinaganuma-org.apache.spark.deploy.master.Master-1-Hiroki-no-MacBook-Pro-2.local.out\r\nlocalhost: ssh: connect to host localhost port 22: Connection refused\r\n<\/code><\/pre>\n<p>\u5982\u679c\u51fa\u73b0\u7c7b\u4f3c\u7684\u60c5\u51b5\uff0c\u6211\u60f3\u6307\u5b9a\u4f7f\u7528jdk1.8.0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">export <\/span><span class=\"nv\">JAVA_HOME<\/span><span class=\"o\">=<\/span><span class=\"sb\">`<\/span>\/usr\/libexec\/java_home <span class=\"nt\">-v<\/span> 1.8<span class=\"sb\">`<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u90a3\u6837\u505a\u7684\u8bdd\uff0c\u95ee\u9898\u5c31\u89e3\u51b3\u4e86\u3002<\/p>\n<p>\u968f\u540e<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>sbin\/start-all.sh\r\nstarting org.apache.spark.deploy.master.Master, logging to \/Users\/hirokinaganuma\/Desktop\/Hoge\/SoraPractice\/spark-2.0.0-bin-hadoop2.7\/logs\/spark-hirokinaganuma-org.apache.spark.deploy.master.Master-1-Hiroki-no-MacBook-Pro-2.local.out\r\nlocalhost: ssh: connect to host localhost port 22: Connection refused\r\n<\/code><\/pre>\n<p>\u597d\u50cf\u53d8\u6210\u4e86\uff08\u6ca1\u6709\u89e3\u51b3\uff09\u3002<\/p>\n<h3>\u5728\u4e9a\u9a6c\u900a\u7f51\u7edc\u670d\u52a1\u7684EC2\u5b9e\u4f8b\u4e2d\u8fd0\u884c<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e09\u4e2a\u7f51\u7ad9\u94fe\u63a5:<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"SErOHhS0yT\"><p><a href=\"http:\/\/cyborg-ninja.com\/ittips\/3103\">[aws][amazon][ec2] Amazon ec2\u306bSSH\u3067\u63a5\u7d9a\u3059\u308b<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;[aws][amazon][ec2] Amazon ec2\u306bSSH\u3067\u63a5\u7d9a\u3059\u308b&#8221; &#8212; \u6a5f\u68b0\u5fcd\u8005 @cyborg__ninja\" src=\"http:\/\/cyborg-ninja.com\/ittips\/3103\/embed#?secret=yJ7oj3cAln#?secret=SErOHhS0yT\" data-secret=\"SErOHhS0yT\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><br \/>\nhttp:\/\/qiita.com\/ledmonster\/items\/8138d7cf0990ea1017da<br \/>\nhttp:\/\/qiita.com\/mikoto\/items\/4273cd35dce254727363<\/p>\n<p>Spark\u63d0\u4f9b\u4e86\u7528\u4e8e\u5728Amazon EC2\u4e0a\u542f\u52a8\u96c6\u7fa4\u7684\u811a\u672c\uff08EC2\u811a\u672c\uff09\u3002\u4f46\u662f\uff0c\u76ee\u524d\u6700\u65b0\u7248\u672c\uff082.0.1\uff09\u597d\u50cf\u6ca1\u6709\u8fd9\u4e2a\u811a\u672c\u4e86\uff0c\u96be\u9053\u5df2\u7ecf\u4e0d\u63a8\u8350\u4f7f\u7528\u4e86\u5417\uff1f\uff01<\/p>\n<p>\u8fd9\u4e2a\u811a\u672c\u53ef\u4ee5\u542f\u52a8\u8282\u70b9\u7fa4\u5e76\u5728\u5b83\u4eec\u4e0a\u5b89\u88c5Standalone\u96c6\u7fa4\u7ba1\u7406\u5668\uff0c\u4e00\u65e6\u96c6\u7fa4\u542f\u52a8\uff0c\u5c31\u53ef\u4ee5\u4f5c\u4e3aStandalone\u6a21\u5f0f\u4f7f\u7528\u3002EC2\u811a\u672c\u53ef\u4ee5\u7ba1\u7406\u591a\u4e2a\u547d\u540d\u7684\u96c6\u7fa4\uff0c\u8fd9\u4e9b\u96c6\u7fa4\u53ef\u4ee5\u901a\u8fc7EC2\u7684\u5b89\u5168\u7ec4\u6765\u8bc6\u522b\u3002EC2\u811a\u672c\u4f1a\u4e3a\u6bcf\u4e2a\u96c6\u7fa4\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aclustername-master\u548cclustername-slaves\u7684\u5b89\u5168\u7ec4\u3002<\/p>\n<p>\u770b\u8d77\u6765\u5b83\u4f1a\u5e2e\u52a9\u5b8c\u6210\u5b9e\u4f8b\u7684\u521b\u5efa\uff0c\u4f46\u6700\u597d\u67e5\u770b\u4e00\u4e0b\u8fd9\u7bc7\u6587\u7ae0\u3002<br \/>\nhttp:\/\/qiita.com\/mychaelstyle\/items\/b752087a0bee6e41c182<\/p>\n<h2>\u72ec\u7acb\u96c6\u7fa4\u7ba1\u7406\u5668<\/h2>\n<p>Standalone\u96c6\u7fa4\u7ba1\u7406\u5668\u63d0\u4f9b\u4e86\u57fa\u672c\u7684\u7684\u8c03\u5ea6\u7b56\u7565\uff08\u4f8b\u5982\uff0c\u53ef\u8bbe\u7f6e\u5185\u5b58\u548c\u6838\u5fc3\u6570\u7684\u9650\u5236\uff09\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u6bcf\u4e2a\u5e94\u7528\u7a0b\u5e8f\u8d44\u6e90\u7684\u4e0a\u9650\uff0c\u4ece\u800c\u53ef\u4ee5\u5e76\u884c\u6267\u884c\u591a\u4e2a\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n<p>\u9996\u5148\uff0c\u4ece\u8fd9\u91cc\u5f00\u59cb\uff0c\u4e66\u4e2d\u4e5f\u5199\u9053\uff0c\u6211\u4eec\u5e94\u8be5\u5728\u8fd9\u91cc\u8fdb\u884c\u7b2c\u4e00\u6b21\u90e8\u7f72\u4ee5\u719f\u6089\u64cd\u4f5c\u3002\u5982\u679c\u60f3\u8981\u4e0e\u5176\u4ed6\u5e94\u7528\u7a0b\u5e8f\u4e00\u8d77\u8fd0\u884c\u6216\u4f7f\u7528\u66f4\u4e30\u5bcc\u7684\u8c03\u5ea6\u529f\u80fd\uff0c\u4f7f\u7528Mesos\u6216YARN\u662f\u4e0d\u9519\u7684\u9009\u62e9\u3002<\/p>\n<p>YARN\u5177\u6709\u961f\u5217\u7684\u6982\u5ff5\uff0c\u800cMesos\u5219\u652f\u6301\u5e94\u7528\u7a0b\u5e8f\u5728\u8fd0\u884c\u65f6\u66f4\u52a8\u6001\u7684\u5171\u4eab\u3002<\/p>\n<p>\u4e3a\u4e86\u9ad8\u53ef\u7528\u6027\uff0c\u5982\u679c\u6211\u4eec\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u8fd0\u884cStandalone\u96c6\u7fa4\u7684\u914d\u7f6e\uff0c\u6211\u4eec\u4f1a\u9488\u5bf9\u5de5\u4f5c\u8282\u70b9\u7684\u6545\u969c\u8fdb\u884c\u5bb9\u9519\u5904\u7406\u3002\u4e3a\u4e86\u63d0\u9ad8\u96c6\u7fa4\u4e3b\u8282\u70b9\u7684\u53ef\u7528\u6027\uff0c\u53ef\u4ee5\u4f7f\u7528Apache ZooKeeper\uff08\u5206\u5e03\u5f0f\u534f\u8c03\u7cfb\u7edf\uff09\u51c6\u5907\u591a\u4e2a\u5907\u7528\u4e3b\u8282\u70b9\uff0c\u8fd9\u6837\u5f53\u51fa\u73b0\u6545\u969c\u65f6\uff0cSpark\u53ef\u4ee5\u652f\u6301\u5207\u6362\u5230\u65b0\u7684\u4e3b\u8282\u70b9\u3002<\/p>\n<p>\u6b64\u65f6\uff0c\u96c6\u7fa4\u7ba1\u7406\u5668\u5bf9\u4e8e\u9a71\u52a8\u7a0b\u5e8f\u652f\u6301\u4e24\u79cd\u90e8\u7f72\u6a21\u5f0f\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30e2\u30fc\u30c9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30e2\u30fc\u30c9\u3067\u306f\u3001\u30c9\u30e9\u30a4\u30d0\u306fspark-submit\u3092\u5b9f\u884c\u3057\u305f\u30de\u30b7\u30f3\u4e0a\u3067\u3001spark-submit\u306e\u30b3\u30de\u30f3\u30c9\u306e\u4e00\u90e8\u3068\u3057\u3066\u52d5\u4f5c\u3059\u308b\u3002(\u30c9\u30e9\u30a4\u30d0\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u76f4\u63a5\u5165\u529b\u3092\u884c\u3048\u305f\u308a\u3001\u51fa\u529b\u3092\u76f4\u63a5\u898b\u305f\u308a\u3067\u304d\u308b\u304b\u3089)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30af\u30e9\u30b9\u30bf\u30e2\u30fc\u30c9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30af\u30e9\u30b9\u30bf\u30e2\u30fc\u30c9\u3067\u306f\u30c9\u30e9\u30a4\u30d0\u306fStandalone\u30af\u30e9\u30b9\u30bf\u5185\u3067\u3044\u305a\u308c\u304b\u306e\u30ef\u30fc\u30ab\u30fc\u30ce\u30fc\u30c9\u4e0a\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u3057\u3066\u8d77\u52d5\u3055\u308c\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u63a5\u7d9a\u3057\u307e\u3059\u3002\u5207\u308a\u66ff\u3048\u308b\u306e\u306b\u306fspark-submit &#8211;deploy-mode cluster\u306b\u6e21\u3055\u306a\u304d\u3083\u3044\u3051\u307e\u305b\u3093\u3002<\/ul>\n<h2>Apache Mesos is a Chinese-created software system.<\/h2>\n<p>\u4ee5\u4e0b\u662f\u6982\u8ff0<br \/>\nApache Mesos\u662f\u4e00\u500b\u901a\u7528\u7684\u96c6\u7fa4\u7ba1\u7406\u5668\uff0c\u53ef\u4ee5\u5728\u96c6\u7fa4\u4e0a\u904b\u884c\u5206\u6790\u5de5\u4f5c\u8ca0\u8f09\u3001\u9577\u671f\u904b\u884c\u7684\u7db2\u7d61\u61c9\u7528\u7a0b\u5e8f\u3001\u9375\u503c\u5b58\u5132\u7b49\u670d\u52d9\u3002<br \/>\n\u5728\u591a\u4e3b\u6a21\u5f0f\u4e0b\u904b\u884c\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528ZooKeeper\u4f86\u9078\u64c7\u4e3b\u7bc0\u9ede\u3002\u6b64\u5916\uff0cMesos\u4e0a\u7684Spark\u652f\u6301\u7684\u61c9\u7528\u7a0b\u5e8f\u904b\u884c\u6a21\u5f0f\u50c5\u70ba\u5ba2\u6236\u7aef\u90e8\u7f72\u6a21\u5f0f\u3002\u9019\u610f\u5473\u8457\u201c\u9a45\u52d5\u7a0b\u5e8f\u5728\u63d0\u4ea4\u61c9\u7528\u7a0b\u5e8f\u7684\u6a5f\u5668\u4e0a\u904b\u884c\u201d\u3002\u5982\u679c\u60f3\u5728Mesos\u96c6\u7fa4\u4e0a\u904b\u884c\u9a45\u52d5\u7a0b\u5e8f\uff0c\u5247\u9700\u8981\u4f7f\u7528Aurora\u6216Chronos\u7b49\u6846\u67b6\u3002<br \/>\n\u6b64\u5916\uff0c\u8207\u5176\u4ed6\u96c6\u7fa4\u7ba1\u7406\u5668\u4e0d\u540c\uff0cMesos\u5728\u540c\u4e00\u96c6\u7fa4\u4e2d\u7684\u57f7\u884c\u5668\u4e4b\u9593\u63d0\u4f9b\u5169\u7a2e\u8cc7\u6e90\u5171\u4eab\u6a21\u5f0f\u3002<\/p>\n<p>fine-grained\u30e2\u30fc\u30c9<br \/>\n\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u306f\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3057\u306a\u304c\u3089Mesos\u306b\u8981\u6c42\u3059\u308bCPU\u6570\u3092\u5897\u6e1b\u3055\u305b\u308b\u306e\u3067\u3001\u8907\u6570\u306e\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u306f\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u30de\u30b7\u30f3\u306f\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u9593\u306eCPU\u30ea\u30bd\u30fc\u30b9\u3092\u52d5\u7684\u306b\u5171\u6709\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30bf\u30b9\u30af\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3059\u308b\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u5927\u304d\u304f\u306a\u3063\u3066\u3057\u307e\u3046\u3002<\/p>\n<p>coarse-grained\u30e2\u30fc\u30c9<br \/>\nSpark\u306f\u304b\u304f\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u304c\u4f7f\u7528\u3059\u308bCPU\u6570\u3092\u3042\u3089\u304b\u3058\u3081\u6c7a\u3081\u3066\u304a\u304d\u3001\u4eee\u306b\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u304c\u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3057\u3066\u3044\u306a\u304f\u3066\u3082\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u7d42\u4e86\u3059\u308b\u307e\u3067\u306fCPU\u3092\u958b\u653e\u3057\u307e\u305b\u3093\u3002<\/p>\n<h1>\u8bf7\u53c2\u9605<\/h1>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/197-1.jpeg\" alt=\"undefined\" \/><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Welcome to ____ __ \/ __\/__ ___ _____\/ \/__ _\\ \\\/ _ \\\/ _  [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-36788","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u4f7f\u7528Apache Spark\u5b66\u4e60\u5206\u5e03\u5f0f\u5904\u7406 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528apache-spark\u5b66\u4e60\u5206\u5e03\u5f0f\u5904\u7406\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Apache Spark\u5b66\u4e60\u5206\u5e03\u5f0f\u5904\u7406\" \/>\n<meta property=\"og:description\" content=\"Welcome to ____ __ \/ __\/__ ___ _____\/ \/__ _ \/ _ \/ _ [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528apache-spark\u5b66\u4e60\u5206\u5e03\u5f0f\u5904\u7406\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-04-30T13:21:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-29T03:12:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d2af537434c4406c48f3f\/3-0.png\" \/>\n<meta name=\"author\" content=\"\u96c5, \u609f\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u96c5, \u609f\" \/>\n\t<meta name=\"twitter:label2\" 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