{"id":1960,"date":"2024-03-13T15:01:33","date_gmt":"2024-03-13T06:01:33","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/hadoop%e3%81%a7%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ae%e5%9c%a7%e7%b8%ae%e3%82%92%e5%ae%9f%e7%8f%be%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/"},"modified":"2025-08-02T03:37:17","modified_gmt":"2025-08-01T18:37:17","slug":"hadoop%e3%81%a7%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ae%e5%9c%a7%e7%b8%ae%e3%82%92%e5%ae%9f%e7%8f%be%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/hadoop%e3%81%a7%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ae%e5%9c%a7%e7%b8%ae%e3%82%92%e5%ae%9f%e7%8f%be%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/","title":{"rendered":"Hadoop\u3067\u30c7\u30fc\u30bf\u306e\u5727\u7e2e\u3092\u5b9f\u73fe\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>Hadoop\u5185\u3067\u306f\u3001MapReduce\u30b8\u30e7\u30d6\u3067\u30c7\u30fc\u30bf\u5727\u7e2e\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u5727\u7e2e\u5f62\u5f0f\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002Hadoop\u306fGzip\u3001Bzip2\u3001Snappy\u3001LZO\u306a\u3069\u3055\u307e\u3056\u307e\u306a\u5727\u7e2e\u5f62\u5f0f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002Hadoop\u306e\u69cb\u6210\u30d5\u30a1\u30a4\u30eb\u3067\u4f7f\u7528\u3059\u308b\u5727\u7e2e\u5f62\u5f0f\u3092\u6307\u5b9a\u3057\u305f\u308a\u3001MapReduce\u30b8\u30e7\u30d6\u3067JobConf\u306b\u5727\u7e2e\u5f62\u5f0f\u3092\u8a2d\u5b9a\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306f\u3001Gzip\u5727\u7e2e\u5f62\u5f0f\u3092\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u306e\u4f8b\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> org.apache.hadoop.conf.Configuration;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.hadoop.fs.Path;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.hadoop.io.compress.GzipCodec;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.hadoop.mapreduce.Job;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.hadoop.mapreduce.lib.input.FileInputFormat;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MyJob<\/span> {\r\n\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> <span class=\"hljs-keyword\">throws<\/span> Exception {\r\n        <span class=\"hljs-type\">Configuration<\/span> <span class=\"hljs-variable\">conf<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Configuration<\/span>();\r\n        <span class=\"hljs-type\">Job<\/span> <span class=\"hljs-variable\">job<\/span> <span class=\"hljs-operator\">=<\/span> Job.getInstance(conf, <span class=\"hljs-string\">\"MyJob\"<\/span>);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u538b\u7f29\u683c\u5f0f\u4e3aGzip<\/span>\r\n        FileOutputFormat.setCompressOutput(job, <span class=\"hljs-literal\">true<\/span>);\r\n        FileOutputFormat.setOutputCompressorClass(job, GzipCodec.class);\r\n\r\n        job.setJarByClass(MyJob.class);\r\n        job.setMapperClass(MyMapper.class);\r\n        job.setReducerClass(MyReducer.class);\r\n\r\n        job.setOutputKeyClass(Text.class);\r\n        job.setOutputValueClass(IntWritable.class);\r\n\r\n        FileInputFormat.addInputPath(job, <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Path<\/span>(args[<span class=\"hljs-number\">0<\/span>]));\r\n        FileOutputFormat.setOutputPath(job, <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Path<\/span>(args[<span class=\"hljs-number\">1<\/span>]));\r\n\r\n        System.exit(job.waitForCompletion(<span class=\"hljs-literal\">true<\/span>) ? <span class=\"hljs-number\">0<\/span> : <span class=\"hljs-number\">1<\/span>);\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u3001FileOutputFormat.setCompressOutput\u30e1\u30bd\u30c3\u30c9\u3068 FileOutputFormat.setOutputCompressorClass\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001\u51fa\u529b\u30c7\u30fc\u30bf\u306e\u5727\u7e2e\u5f62\u5f0f\u3092Gzip\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u4ed6\u306e\u5727\u7e2e\u5f62\u5f0f\u306e\u8a2d\u5b9a\u65b9\u6cd5\u3082\u540c\u69d8\u3067\u3001GzipCodec.class\u3092\u9069\u5207\u306a\u5727\u7e2e\u5f62\u5f0f\u30af\u30e9\u30b9\u306b\u7f6e\u304d\u63db\u3048\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u306e\u7279\u6027\u3084\u5fc5\u8981\u6027\u306b\u57fa\u3065\u3044\u3066\u3001\u9069\u5207\u306a\u5727\u7e2e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u9078\u629e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u7570\u306a\u308b\u5727\u7e2e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306f\u7570\u306a\u308b\u5727\u7e2e\u7387\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hadoop\u5185\u3067\u306f\u3001MapReduce\u30b8\u30e7\u30d6\u3067\u30c7\u30fc\u30bf\u5727\u7e2e\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u5727\u7e2e\u5f62\u5f0f\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002Hadoop\u306fGzip\u3001Bzip2\u3001Snappy\u3001LZO\u306a\u3069\u3055\u307e\u3056\u307e\u306a\u5727\u7e2e\u5f62\u5f0f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002Hadoop\u306e\u69cb\u6210\u30d5\u30a1\u30a4 [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-1960","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"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>Hadoop\u3067\u30c7\u30fc\u30bf\u306e\u5727\u7e2e\u3092\u5b9f\u73fe\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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