{"id":41116,"date":"2023-09-08T14:41:00","date_gmt":"2023-02-11T19:44:49","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8structured-streaming%e5%a4%84%e7%90%86%e6%9d%a5%e8%87%aakafka%e7%9a%84%e6%95%b0%e6%8d%ae%ef%bc%8c%e5%b9%b6%e5%b0%86%e5%85%b6%e5%8f%91%e9%80%81%e5%88%b0elasticsearch%e3%80%82\/"},"modified":"2024-04-30T21:58:27","modified_gmt":"2024-04-30T13:58:27","slug":"%e4%bd%bf%e7%94%a8structured-streaming%e5%a4%84%e7%90%86%e6%9d%a5%e8%87%aakafka%e7%9a%84%e6%95%b0%e6%8d%ae%ef%bc%8c%e5%b9%b6%e5%b0%86%e5%85%b6%e5%8f%91%e9%80%81%e5%88%b0elasticsearch%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8structured-streaming%e5%a4%84%e7%90%86%e6%9d%a5%e8%87%aakafka%e7%9a%84%e6%95%b0%e6%8d%ae%ef%bc%8c%e5%b9%b6%e5%b0%86%e5%85%b6%e5%8f%91%e9%80%81%e5%88%b0elasticsearch%e3%80%82\/","title":{"rendered":"\u4f7f\u7528Structured Streaming\u5904\u7406\u6765\u81eaKafka\u7684\u6570\u636e\uff0c\u5e76\u5c06\u5176\u53d1\u9001\u5230Elasticsearch"},"content":{"rendered":"

\u6211\u5011\u8a66\u8457\u5f9eApache Kafka\u53d6\u5f97\u6d41\u6578\u64da\uff0c\u4e26\u901a\u904eSpark\u7684\u7d50\u69cb\u5316\u4e32\u6d41\u8655\u7406\u5b83\uff0c\u6700\u5f8c\u5c07\u5176\u6d41\u5411Elasticsearch\u3002\u9019\u7bc7\u6587\u7ae0\u4e2d\u7684\u6587\u4ef6\u63cf\u8ff0\u4e86\u5982\u4f55\u5728\u7d50\u69cb\u5316\u4e32\u6d41\u4e2d\u4f7f\u7528ES-Hadoop\u3002<\/p>\n

\"azure-databricks-overview.png\"<\/div>\n

\u5047\u8bbe\u6309\u7167\u4e0a\u4e00\u7bc7\u6587\u7ae0\u7684\u65b9\u6cd5\u52a0\u8f7d\u4e86ES-Hadoop\u5e93\uff0c\u5e76\u4e14\u5df2\u7ecf\u521b\u5efa\u4e86Kafka\u548cElasticsearch\u73af\u5883\u3002<\/p>\n

\u5efa\u7acb\u4e0e Kafka \u7684\u8fde\u63a5<\/h3>\n

\u8fde\u63a5\u5230Kafka\u7684\u5b9a\u4e49\u5982\u4e0b\u6240\u793a\u3002<\/p>\n

val<\/span> kafkaDF<\/span> =<\/span> (<\/span>\r\n  spark<\/span>\r\n    .<\/span>readStream<\/span>\r\n    .<\/span>option<\/span>(<\/span>\"kafka.bootstrap.servers\"<\/span>,<\/span> \"YOUR.HOST:PORT1,YOUR.HOST:PORT2\"<\/span>)<\/span>\r\n    .<\/span>option<\/span>(<\/span>\"subscribe\"<\/span>,<\/span> \"YOUR_TOPIC1,YOUR_TOPIC2\"<\/span>)<\/span>\r\n    .<\/span>option<\/span>(<\/span>\"startingOffsets\"<\/span>,<\/span> \"latest\"<\/span>)<\/span>\r\n    .<\/span>format<\/span>(<\/span>\"kafka\"<\/span>)<\/span>\r\n    .<\/span>load<\/span>()<\/span>\r\n)<\/span>\r\n<\/code><\/pre>\n
\u51c6\u5907\u5b8c\u6210\uff0c\u73b0\u5728\u53ef\u4ee5\u666e\u901a\u5730\u786e\u8ba4\u6570\u636e\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
display<\/span>(<\/span>kafkaDF<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u6a21\u5f0f\u7684\u5b9a\u4e49<\/h3>\n
\u660e\u786e\u5b9a\u4e49\u6a21\u5f0f\u3002\u4ee5\u4e0b\u662f\u6839\u636e\u624b\u5934\u7684\u6837\u672c\u6570\u636e\u8fdb\u884c\u7684\u6267\u884c\uff0c\u4f46\u9700\u8981\u6839\u636e\u6570\u636e\u8fdb\u884c\u76f8\u5e94\u4fee\u6539\u7684\u90e8\u5206\u3002<\/p>\n
import<\/span> org.apache.spark.sql.types._<\/span>\r\n\r\nval<\/span> schema<\/span> =<\/span> new<\/span> StructType<\/span>()<\/span>\r\n  .<\/span>add<\/span>(<\/span>\"orderID\"<\/span>,<\/span> IntegerType<\/span>)<\/span>\r\n  .<\/span>add<\/span>(<\/span>\"productID\"<\/span>,<\/span> IntegerType<\/span>)<\/span>\r\n  .<\/span>add<\/span>(<\/span>\"orderTimestamp\"<\/span>,<\/span> TimestampType<\/span>)<\/span>\r\n  .<\/span>add<\/span>(<\/span>\"orderQty\"<\/span>,<\/span> IntegerType<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u5c06Kafka\u6570\u636e\u8bfb\u5165DataFrame\u4e2d<\/h3>\n
\u5c06\u4e4b\u524d\u5b9a\u4e49\u7684\u6a21\u5f0f\u5e94\u7528\u4e8eDataFrame\u5e76\u52a0\u8f7d\u6570\u636e\u3002<\/p>\n
import<\/span> org.apache.spark.sql.functions._<\/span>\r\n\r\nval<\/span> df<\/span> =<\/span> kafkaDF<\/span>.<\/span>selectExpr<\/span>(<\/span>\"CAST(value AS STRING)\"<\/span>,<\/span> \"CAST(timestamp AS TIMESTAMP)\"<\/span>).<\/span>as<\/span>[(<\/span>String<\/span>, java.sql.Timestamp<\/span>)]<\/span>\r\n        .<\/span>select<\/span>(<\/span>from_json<\/span>(<\/span>$<\/span>\"value\"<\/span>,<\/span> schema<\/span>).<\/span>as<\/span>(<\/span>\"order\"<\/span>),<\/span> $<\/span>\"timestamp\"<\/span>)<\/span>\r\n        .<\/span>select<\/span>(<\/span>\"order.*\"<\/span>,<\/span> \"timestamp\"<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u8bbe\u7f6e\u5206\u533a<\/h3>\n
\u8981\u8bbe\u7f6eshuffle\u540e\u7684\u5206\u533a\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u8bbe\u7f6e\u4e3a8\u7684\u793a\u4f8b\u3002<\/p>\n
spark<\/span>.<\/span>conf<\/span>.<\/span>set<\/span>(<\/span>\"spark.sql.shuffle.partitions\"<\/span>,<\/span> 8<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u6c47\u603b\u6570\u636e<\/h3>\n
\u5728\u5199\u51fa\u96c6\u8ba1\u6570\u636e\u6d41\u65f6\uff0c\u9700\u8981\u5b9a\u4e49\u65f6\u95f4\u7a97\u53e3\u3002\u5982\u679c\u4e0d\u8fdb\u884c\u8bbe\u7f6e\uff0c\u5c06\u65e0\u6cd5\u8fdb\u884c\u540e\u7eed\u7684\u5199\u6d41\u64cd\u4f5c\u3002<\/p>\n
import<\/span> org.apache.spark.sql.functions._<\/span>\r\n\r\nval<\/span> aggregatedDF<\/span> =<\/span> df<\/span>.<\/span>withWatermark<\/span>(<\/span>\"timestamp\"<\/span>,<\/span> \"1 minutes\"<\/span>).<\/span>groupBy<\/span>(<\/span>$<\/span>\"productID\"<\/span>,<\/span> window<\/span>(<\/span>$<\/span>\"timestamp\"<\/span>,<\/span> \"1 minutes\"<\/span>)).<\/span>count<\/span>()<\/span>\r\n<\/code><\/pre>\n
\u521b\u5efa\u68c0\u67e5\u70b9\u76ee\u5f55<\/h3>\n
\u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u5199\u5165\u504f\u79fb\u91cf\u548c\u63d0\u4ea4\u65e5\u5fd7\u7684\u76ee\u5f55\u3002<\/p>\n
%fs mkdirs \/tmp\/es\r\n<\/code><\/pre>\n
\u5c06\u6570\u636e\u5199\u5165Elasticsearch<\/h3>\n
\u5728\u8fd9\u91cc\u5c06 writeStream \u6d41\u4fdd\u6301\u4e0d\u65ad\uff0c\u5728\u6267\u884c\u4e0b\u4e00\u884c\u4ee3\u7801\u3002<\/p>\n
df<\/span>.<\/span>writeStream<\/span>\r\n      .<\/span>option<\/span>(<\/span>\"es.nodes.wan.only\"<\/span>,<\/span>\"true\"<\/span>)<\/span>\r\n      .<\/span>option<\/span>(<\/span>\"es.net.ssl\"<\/span>,<\/span>\"false\"<\/span>)<\/span>\r\n      .<\/span>option<\/span>(<\/span>\"es.nodes\"<\/span>,<\/span> \"<Your Elasticsearch>\"<\/span>)<\/span>\r\n      .<\/span>option<\/span>(<\/span>\"checkpointLocation\"<\/span>,<\/span> \"\/tmp\/es\"<\/span>)<\/span>\r\n      .<\/span>option<\/span>(<\/span>\"es.port\"<\/span>,<\/span> \"<Port>\"<\/span>)<\/span>\r\n      .<\/span>format<\/span>(<\/span>\"es\"<\/span>)<\/span>\r\n      .<\/span>start<\/span>(<\/span>\"orders\/log\"<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u786e\u8ba4\u88ab\u5199\u5165\u7684\u7d22\u5f15<\/h3>\n
\u4f7f\u7528curl\u547d\u4ee4\u6765\u67e5\u770b\u5199\u5165Elasticsearch\u7684\u6570\u636e\u3002\u8fd9\u91cc\u662f\u4f7f\u7528Elasticsearch\u7684search API\u3002<\/p>\n
%sh curl http:\/\/<Your Elasticsearch>:<Port>\/orders\/log\/_search?q=productID:869\r\n<\/code><\/pre>\n
\u4f7f\u7528Spark\u8fde\u63a5Elasticsearch\u5e76\u83b7\u53d6\u6570\u636e\u3002<\/h3>\n
\u5373\u4f7f\u662f\u6d41\u6570\u636e\uff0c\u4e5f\u53ef\u4ee5\u7279\u522b\u652f\u6301\u5904\u7406\u3002<\/p>\n
val<\/span> reader<\/span> =<\/span> spark<\/span>.<\/span>read<\/span>\r\n  .<\/span>format<\/span>(<\/span>\"org.elasticsearch.spark.sql\"<\/span>)<\/span>\r\n  .<\/span>option<\/span>(<\/span>\"es.nodes.wan.only\"<\/span>,<\/span>\"true\"<\/span>)<\/span>\r\n  .<\/span>option<\/span>(<\/span>\"es.port\"<\/span>,<\/span> \"<Port>\"<\/span>)<\/span>\r\n  .<\/span>option<\/span>(<\/span>\"es.net.ssl\"<\/span>,<\/span>\"false\"<\/span>)<\/span>\r\n  .<\/span>option<\/span>(<\/span>\"es.nodes\"<\/span>,<\/span> \"<Your Elasticsearch>\"<\/span>)<\/span>\r\n\r\nval<\/span> SQLdf<\/span> =<\/span> reader<\/span>.<\/span>load<\/span>(<\/span>\"orders\/log\"<\/span>)<\/span>\r\ndisplay<\/span>(<\/span>SQLdf<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528SQL\u8bbf\u95ee<\/h3>\n
\u5728Elasticsearch\u7684\u6587\u6863\u4e2d\u521b\u5efa\u8868\u683c\u5e76\u6267\u884c\u67e5\u8be2\u3002<\/p>\n
%<\/span>sql<\/span>\r\nDROP<\/span> TABLE<\/span> IF<\/span> EXISTS<\/span> dcmotor<\/span>;<\/span>\r\n\r\nCREATE<\/span> TEMPORARY<\/span> TABLE<\/span> orders<\/span>\r\nUSING<\/span> org<\/span>.<\/span>elasticsearch<\/span>.<\/span>spark<\/span>.<\/span>sql<\/span>\r\nOPTIONS<\/span>(<\/span>'resource'<\/span>=<\/span>'orders\/log'<\/span>,<\/span> \r\n  'nodes'<\/span>=<\/span> '<Your Elasticsearch>'<\/span>,<\/span>\r\n  'es.nodes.wan.only'<\/span>=<\/span>'true'<\/span>,<\/span>\r\n  'es.port'<\/span>=<\/span>'<Port>'<\/span>,<\/span>\r\n  'es.net.ssl'<\/span>=<\/span>'false'<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u6267\u884c\u67e5\u8be2\u3002<\/p>\n
%<\/span>sql<\/span> SELECT<\/span> ProductID<\/span>,<\/span> SUM<\/span>(<\/span>orderQty<\/span>)<\/span> AS<\/span> sum<\/span> FROM<\/span> orders<\/span> GROUP<\/span> BY<\/span> ProductID<\/span> ORDER<\/span> BY<\/span> sum<\/span> DESC<\/span> LIMIT<\/span> 10<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u9019\u6a23\u4e00\u4f86\uff0cElasticsearch\u5c07\u4e0d\u65b7\u63a5\u6536\u4e32\u6d41\u8655\u7406\u7684\u8cc7\u6599\u3002\u4f7f\u7528\u6642\u9593\u6233\u8a18\u8cc7\u6599\uff0c\u6211\u5011\u53ef\u4ee5\u5728Kibana\u9032\u884c\u6642\u5e8f\u8cc7\u6599\u7684\u8996\u89ba\u5316\u548c\u76e3\u63a7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6211\u5011\u8a66\u8457\u5f9eApache Kafka\u53d6\u5f97\u6d41\u6578\u64da\uff0c\u4e26\u901a\u904eSpark\u7684\u7d50\u69cb\u5316\u4e32\u6d41\u8655\u7406\u5b83\uff0c\u6700\u5f8c\u5c07\u5176\u6d41\u5411Elastics […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41116","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528Structured Streaming\u5904\u7406\u6765\u81eaKafka\u7684\u6570\u636e\uff0c\u5e76\u5c06\u5176\u53d1\u9001\u5230Elasticsearch - 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\u7528structured-streaming\u5904\u7406\u6765\u81eakafka\u7684\u6570\u636e\uff0c\u5e76\u5c06\u5176\u53d1\u9001\u5230elasticsearch\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Structured Streaming\u5904\u7406\u6765\u81eaKafka\u7684\u6570\u636e\uff0c\u5e76\u5c06\u5176\u53d1\u9001\u5230Elasticsearch\" \/>\n<meta property=\"og:description\" content=\"\u6211\u5011\u8a66\u8457\u5f9eApache Kafka\u53d6\u5f97\u6d41\u6578\u64da\uff0c\u4e26\u901a\u904eSpark\u7684\u7d50\u69cb\u5316\u4e32\u6d41\u8655\u7406\u5b83\uff0c\u6700\u5f8c\u5c07\u5176\u6d41\u5411Elastics […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528structured-streaming\u5904\u7406\u6765\u81eakafka\u7684\u6570\u636e\uff0c\u5e76\u5c06\u5176\u53d1\u9001\u5230elasticsearch\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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