{"id":47253,"date":"2023-05-16T13:38:34","date_gmt":"2024-02-24T03:18:30","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8google-cloud%e4%b8%8a%e6%9e%84%e5%bb%ba%e9%80%9a%e7%94%a8%e6%95%b0%e6%8d%ae%e5%ba%93%ef%bc%88database%ef%bc%89-dataflow1-%e3%80%82\/"},"modified":"2024-04-30T04:27:05","modified_gmt":"2024-04-29T20:27:05","slug":"%e5%9c%a8google-cloud%e4%b8%8a%e6%9e%84%e5%bb%ba%e9%80%9a%e7%94%a8%e6%95%b0%e6%8d%ae%e5%ba%93%ef%bc%88database%ef%bc%89-dataflow1-%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8google-cloud%e4%b8%8a%e6%9e%84%e5%bb%ba%e9%80%9a%e7%94%a8%e6%95%b0%e6%8d%ae%e5%ba%93%ef%bc%88database%ef%bc%89-dataflow1-%e3%80%82\/","title":{"rendered":"\u5728Google Cloud\u4e0a\u6784\u5efa\u901a\u7528\u6570\u636e\u5e93\uff08Database\uff09- DataFlow1-"},"content":{"rendered":"

\u6211\u5011\u7684\u5718\u968a\u6b63\u5728\u8a2d\u8a08\u4e00\u500b\u63a1\u7528\u5fae\u670d\u52d9\u67b6\u69cb\u7684\u4e0b\u4e00\u4ee3\u5f8c\u7aef\uff0c\u5728\u5168\u516c\u5171\u96f2\u5e73\u53f0\u4e0a\u9032\u884c\u3002<\/p>\n

\u7ecf\u8fc7<\/h1>\n

\u5728\u4e4b\u524d\u7684\u5e16\u5b50\u4e2d\uff0c\u6211\u5011\u5927\u81f4\u78ba\u5b9a\u4e86\u6211\u5011\u7684\u76ee\u6a19\uff0c\u6240\u4ee5\u6211\u5011\u5c07\u5728\u5718\u968a\u5167\u5c0d\u6bcf\u500b\u5b50\u7cfb\u7d71\u9032\u884c\u539f\u578b\u88fd\u4f5c\u3002\u9019\u6b21\u6211\u5011\u4f86\u8a66\u8a66DataFlow\u3002<\/p>\n

\u524d\u63d0<\/h1>\n

\u6709\u4e00\u4e9b\u5173\u4e8eCloudDataFlow\u7684\u5148\u524d\u77e5\u8bc6\u9700\u8981\u603b\u7ed3\u4e00\u4e0b\uff0c\u6240\u4ee5\u6211\u4f1a\u4e00\u8d77\u603b\u7ed3\u51fa\u6765\u3002
\n\u203b\u6211\u4f1a\u9010\u6b65\u589e\u52a0\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n

\u90e8\u7f72<\/h2>\n

\u4f7f\u7528Eclipse\u6216Maven\u521b\u5efa\u7684\u6210\u679c\u7269\u5c06\u4f1a\u88ab\u4f20\u8f93\u5230CloudStorage\u4e2d\u3002
\n\u5f53\u6210\u679c\u7269\uff0c\u5982jar\u6587\u4ef6\u7b49\u4f20\u8f93\u5230CloudStorage\u65f6\uff0c\u51e0\u4e4e\u540c\u65f6\u4f1a\u81ea\u52a8\u521b\u5efaGCE\u5b9e\u4f8b\uff0c
\n\u5e76\u5c06\u5176\u90e8\u7f72\u5230\u8be5\u5b9e\u4f8b\u4e2d\u3002\u672c\u6b21\u5c06\u53c2\u8003\u6b64\u65b9\u6848\uff0c\u5728Eclipse\u4e2d\u8fdb\u884c\u6784\u5efa\u3002<\/p>\n

\u8dd1\u6b65\u8005 zh\u011b)<\/h2>\n

\u6709\u51e0\u79cd\u53ef\u7528\u7684\u9009\u9879\u53ef\u4ee5\u4f5c\u4e3a\u5b9a\u4e49\u597d\u7684\u7ba1\u9053\u7684\u542f\u52a8\u6a21\u5f0f\uff08Runner\uff09\u3002<\/p>\n

\n
PipelineRunner\u6982\u8981DataflowPipelineRunner\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306f\u3001Google\u306e\u30af\u30e9\u30a6\u30c9\u4e0a\u3067\u975e\u540c\u671f\u306b\u5b9f\u884c\u3055\u308c\u308b\u3002\u30b8\u30e7\u30d6\u306e\u9032\u6357\u72b6\u6cc1\u3092\u76e3\u8996\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3002BlockingDataflowPipelineRunnerDataflowPipelineRunner\u3068\u540c\u3058\u3088\u3046\u306b\u3001\u30af\u30e9\u30a6\u30c9\u4e0a\u3067\u5b9f\u884c\u3055\u308c\u308b\u304c\u3001\u7acb\u3061\u4e0a\u3052\u305f\u30b8\u30e7\u30d6\u304c\u7d42\u4e86\u3059\u308b\u306e\u3092\u5f85\u3061\u307e\u3059\u3002\u30b8\u30e7\u30d6\u3092\u5b9f\u884c\u3057\u306a\u304c\u3089\u3001\u5f85\u3063\u3066\u3044\u308b\u9593\u3001\u30b8\u30e7\u30d6\u30b9\u30c6\u30fc\u30bf\u30b9\u306e\u66f4\u65b0\u3068\u30b3\u30f3\u30bd\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u51fa\u529b\u3059\u308b\u3002DirectPipelineRunnerlocal execution, not in Google Cloud. \u30ed\u30fc\u30ab\u30eb\u30de\u30b7\u30f3\u304b\u3089\u306e\u5b9f\u884c\uff08\u30af\u30e9\u30a6\u30c9\u4e0a\u3067\u5b9f\u884c\u3057\u306a\u3044\uff09<\/div>\n<\/div>\n

\u6765\u6e90: https:\/\/cloud.google.com\/dataflow\/pipelines\/specifying-exec-params#asynchronous-execution<\/p>\n

\u5c06\u4e0b\u8ff0\u5185\u5bb9\u4ee5\u4e2d\u6587\u8fdb\u884c\u6539\u5199\uff08\u53ea\u9700\u8981\u4e00\u4e2a\u7ffb\u8bd1\u7248\u672c\uff09\uff1a<\/p>\n

“Cloud Dataflow pipelines can be executed synchronously or asynchronously. In synchronous execution, the pipeline will not return until all the elements have been processed. In asynchronous execution, the pipeline initiates processing and returns immediately, allowing the caller to continue with other work. Asynchronous execution is useful when the caller does not require the pipeline’s full results before proceeding. To specify asynchronous execution in a pipeline, you need to set the appropriate execution parameters.”<\/p>\n

\u6709\u9650\u7684\u548c\u65e0\u9650\u7684<\/h2>\n

\u6570\u636e\u53ef\u4ee5\u901a\u8fc7PCollection\u5bf9\u8c61\u8fdb\u884c\u4ea4\u6362\uff0c\u4f46\u5b58\u5728\u4e24\u79cd\u5f62\u5f0f\u3002<\/p>\n

\n
PCollection\u6982\u8981in,outbounded\u6709\u9650\u30ea\u30bd\u30fc\u30b9TextIO,BigQueryIO,DatastoreIOunbounded\u65ad\u7d9a\u7684\u30ea\u30bd\u30fc\u30b9\uff08stream\uff09PubsubIO,BigQueryIO<\/div>\n<\/div>\n

\u6765\u6e90\uff1ahttps:\/\/cloud.google.com\/dataflow\/model\/pcollection#bounded-and-unbounded-pcollections<\/p>\n

\u6709\u754c\u548c\u65e0\u754c\u7684PCollection<\/p>\n

\u6709\u754c\u548c\u65e0\u754c\u7684PCollection\u662f\u5bf9\u6570\u636e\u96c6\u5408\u8fdb\u884c\u5206\u7c7b\u7684\u4e00\u79cd\u65b9\u5f0f\u3002\u6709\u754cPCollection\u8868\u793a\u6570\u636e\u96c6\u5408\u7684\u5927\u5c0f\u5df2\u77e5\u4e14\u6709\u9650\uff0c\u800c\u65e0\u754cPCollection\u8868\u793a\u6570\u636e\u96c6\u5408\u7684\u5927\u5c0f\u672a\u77e5\u4e14\u53ef\u80fd\u65e0\u9650\u3002<\/p>\n

\u5728\u6709\u754cPCollection\u4e2d\uff0c\u6570\u636e\u96c6\u5408\u7684\u5927\u5c0f\u901a\u5e38\u662f\u53ef\u9884\u6d4b\u7684\uff0c\u5e76\u4e14\u4f1a\u5728\u67d0\u4e2a\u65f6\u95f4\u70b9\u5b8c\u6210\u3002\u5bf9\u4e8e\u8fd9\u79cd\u7c7b\u578b\u7684PCollection\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u4e00\u6b21\u6027\u5904\u7406\u4e2d\u8bfb\u53d6\u548c\u5904\u7406\u6574\u4e2a\u6570\u636e\u96c6\u5408\u3002<\/p>\n

\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u65e0\u754cPCollection\u8868\u793a\u53ef\u80fd\u662f\u65e0\u9650\u7684\u6570\u636e\u96c6\u5408\uff0c\u5176\u5927\u5c0f\u65e0\u6cd5\u9884\u6d4b\uff0c\u5e76\u4e14\u53ef\u80fd\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\u800c\u589e\u957f\u3002\u5bf9\u4e8e\u8fd9\u79cd\u7c7b\u578b\u7684\u6570\u636e\u96c6\u5408\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u6d41\u5f0f\u5904\u7406\u6280\u672f\u6765\u8fde\u7eed\u5730\u8bfb\u53d6\u548c\u5904\u7406\u6570\u636e\u3002<\/p>\n

\u6709\u754c\u548c\u65e0\u754cPCollection\u5bf9\u4e8e\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u5904\u7406\u4efb\u52a1\u975e\u5e38\u91cd\u8981\uff0c\u56e0\u6b64\u5728\u4f7f\u7528Google Dataflow\u65f6\u9700\u8981\u4e86\u89e3\u5b83\u4eec\u4e4b\u95f4\u7684\u533a\u522b\u548c\u9002\u7528\u573a\u666f\u3002<\/p>\n

\u56e0\u4e3a\u672c\u6b21\u662f\u4ecePubsubIO\u5230DatastoreIO\uff0c\u6240\u4ee5\u5fc5\u987b\u4ee5\u4e00\u5b9a\u7684\u5757\u6765\u5904\u7406\u6d41\u6570\u636e\u3002
\n\u89e3\u51b3\u65b9\u6848\u662f\u63d0\u4f9b\u4e86\u7a97\u53e3\u5904\u7406\uff0c\u56e0\u6b64\u53ef\u4ee5\u4f7f\u7528\u5b83\u3002<\/p>\n

\u6d41\u5f0f\u81ea\u52a8\u6269\u5c55<\/h2>\n

\u76ee\u524d\u662f2016\u5e7410\u6708\u3002<\/p>\n

Beta
\n\u8fd9\u662f\u4e00\u4e2a\u6d41\u5a92\u4f53\u81ea\u52a8\u6269\u5c55\u7684Beta\u7248\u672c\u3002\u6b64\u529f\u80fd\u53ef\u80fd\u4f1a\u4ee5\u4e0d\u517c\u5bb9\u7684\u65b9\u5f0f\u8fdb\u884c\u66f4\u6539\uff0c\u4e14\u4e0d\u53d7\u4efb\u4f55SLA\u6216\u5f03\u7528\u653f\u7b56\u7684\u7ea6\u675f\u3002<\/p><\/blockquote>\n

\u5173\u4e8e\u6d41\u5f0f\u81ea\u52a8\u7f29\u653e\uff0c\u8fd8\u662f\u5904\u4e8e\u6d4b\u8bd5\u9636\u6bb5\u3002\u3002\u3002\u55ef\u3002\u3002\u3002<\/p>\n

\u6d41\u5f0f\u81ea\u52a8\u7f29\u653e\u7ba1\u9053\u4f7f\u7528\u7684\u5de5\u4eba\u6570\u91cf\u5728N\/15\u5230N\u4e4b\u95f4\u53d8\u52a8\uff0c\u5176\u4e2dN\u662f–maxNumWorkers\u7684\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u7684\u7ba1\u9053\u5728\u7a33\u5b9a\u72b6\u6001\u4e0b\u9700\u89813\u62164\u4e2a\u5de5\u4eba\uff0c\u60a8\u53ef\u4ee5\u5c06–maxNumWorkers\u8bbe\u7f6e\u4e3a15\uff0c\u7ba1\u9053\u5c06\u81ea\u52a8\u57281\u4e2a\u5de5\u4eba\u548c15\u4e2a\u5de5\u4eba\u4e4b\u95f4\u8fdb\u884c\u7f29\u653e\u3002
\n–maxNumWorkers\u6700\u591a\u53ef\u4e3a1000\u3002<\/p><\/blockquote>\n

\u793a\u4f8b\u4e2d\u6709\u63d0\u5230\u4f7f\u7528Worker 3\u62164\uff0c\u5e76\u6307\u5b9a–maxNumWorkers=15\u3002\u5728\u5b9e\u9645\u5904\u7406\u4e2d\uff0c\u8fd9\u4f3c\u4e4e\u9700\u8981\u6709\u4e00\u4e9b\u6027\u80fd\u4f18\u5316\u3002<\/p>\n

\u6765\u6e90\uff1ahttps:\/\/cloud.google.com\/dataflow\/faq<\/p>\n

\u7b54\uff1a\u4ee5\u4e0b\u662f\u5bf9\u6b64\u7684\u4e2d\u56fd\u53e5\u5b50\u8868\u8fbe\uff1a<\/p>\n

\u6765\u6e90\uff1ahttps:\/\/cloud.google.com\/dataflow\/faq<\/p>\n

\u4e91Pub\/Sub\u7684\u6d88\u606f\u987a\u5e8f\u6027\uff08\u4e00\u5e2d\u8bdd\uff09<\/h2>\n

\u5728\u9014\u4e2d\u6211\u610f\u8bc6\u5230Cloud Pub\/Sub\u5b8c\u5168\u4e0d\u4fdd\u8bc1\u6d88\u606f\u7684\u987a\u5e8f\u6027\u3002\u6216\u8005\u8bf4\uff0c\u4ece\u4e0b\u9762\u7684\u5185\u5bb9\u6765\u770b\uff0c\u987a\u5e8f\u6027\u771f\u7684\u9700\u8981\u5417\uff1f\u8fd9\u4f3c\u4e4e\u662f\u4ed6\u4eec\u7684\u7acb\u573a\u3002\u867d\u7136\u6ca1\u6709\u660e\u786e\u63d0\u53ca\u8fd9\u4e00\u70b9\uff0c\u4f46\u91cd\u70b9\u662f\u5728\u53ef\u6269\u5c55\u6027\u548c\u9ad8\u53ef\u7528\u6027\u4e4b\u95f4\u505a\u53d6\u820d\u3002<\/p>\n

\u6211\u660e\u767d\u4e86\u3002\u60a8\u8bf4\u5f97\u5bf9\u3002\u8bbe\u8ba1\u4e0a\u7c7b\u4f3c\u4e8eApache Kafka\uff0c\u4f46\u9700\u8981\u91cd\u65b0\u8003\u8651\u2026\u2026\u679c\u7136\u8fd8\u662f\u9700\u8981\u5927\u5bb6\u4e00\u8d77\u6295\u5165\u8fdb\u53bb\u3002<\/p>\n

    Message Ordering<\/ul>\n

    \u4e0b\u4e00\u6b21<\/h1>\n

    \u4e0b\u6b21\u7ec8\u4e8e\u80fd\u4eb2\u624b\u64cd\u4f5c\u4e86\uff0c\u4f46\u9700\u8981\u76f8\u5f53\u591a\u7684\u5148\u5907\u77e5\u8bc6\u3002\u6211\u7684\u6280\u80fd\u6c34\u5e73\u8ba9\u4eba\u56f0\u6270\u3002\u3002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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