\u6d41\u8ba1\u7b97\u4f5c\u4e3a\u7099\u624b\u53ef\u70ed\u7684\u6280\u672f\u88ab\u7535\u5546\u5e73\u53f0\u5e7f\u4e3a\u91c7\u7528\uff0c\u6765\u81ea\u82cf\u5b81\u6613\u8d2dIT\u603b\u90e8\u7684\u5927\u6570\u636e\u5e73\u53f0\u9ad8\u7ea7\u6280\u672f\u7ecf\u7406\u9648\u4e30\uff0c\u5c31\u57282018\u4e2d\u56fd\u5b58\u50a8\u4e0e\u6570\u636e\u5cf0\u4f1a\u4e0a\u53d1\u8868\u4e86\u300a\u6d41\u8ba1\u7b97\u5728\u82cf\u5b81\u7684\u524d\u4e16\u4eca\u751f\u300b\u7684\u4e3b\u9898\u62a5\u544a\uff0c\u6709\u5bf9\u4e1a\u52a1\u573a\u666f\u548c\u75db\u70b9\u7684\u8bb2\u8ff0\uff0c\u4e5f\u6709\u653b\u514b\u6280\u672f\u96be\u70b9\u7684\u5b9e\u9645\u611f\u53d7\uff0c\u4ee4\u4eba\u8bb0\u5fc6\u6df1\u523b\u3002<\/strong><\/span><\/p>\n

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<\/section>\n<\/section>\n<\/section>\n
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<\/section>\n<\/section>\n<\/section>\n
\u65e2\u7136\u8bf4\u5230\u524d\u4e16\u4eca\u751f\uff0c\u9996\u5148\u4ecb\u7ecd\u4e00\u4e0b\u6d41\u8ba1\u7b97\u5e73\u53f0\u5728\u82cf\u5b81\u7684\u6574\u4e2a\u53d1\u5c55\u5386\u7a0b\uff0c\u600e\u4e48\u4eceStorm\u5230\u76ee\u524d\u5f88\u706b\u7684Flink\uff0c\u4ee5\u53ca\u5b83\u7684\u73b0\u72b6\uff0c\u8c08\u8c08\u6574\u4f53\u7684\u67b6\u6784\u4ee5\u53ca\u5b83\u7684\u6574\u4f53\u96c6\u7fa4\u89c4\u6a21\u30022018\u5e74\u4e0a\u534a\u5e74\uff0c\u82cf\u5b81\u628a\u4e3b\u8981\u7cbe\u529b\u90fd\u6295\u5411\u4e86Flink\u3002<\/p>\n
\u9996\u5148\u770b\u4e00\u4e0b\u5e73\u53f0\u7684\u53d1\u5c55\u5386\u7a0b\u3002<\/strong><\/p>\n
$\"\"$ <\/a><\/p>\n
\u6700\u65e92014\u5e74\u82cf\u5b81\u4e0a\u7ebf\u4e86\u7b2c\u4e00\u4e2aStorm\u7684\u5927\u5c4f\u5c55\u793a\u4efb\u52a1\uff0c\u540c\u5e74Storm\u6574\u4f53\u7684\u5b75\u5316\u5e73\u53f0\u4e0a\u7ebf\u3002\u5230\u4e862015\u5e74\u56e0\u4e3a\u5bf9\u4e8eSQL\u5f00\u53d1\u7684\u9700\u6c42\u82cf\u5b81\u8fd8\u662f\u6bd4\u8f83\u591a\u7684\uff0c\u82cf\u5b81\u81ea\u7814\u4e86\u4e00\u5957\u57fa\u4e8e\u5b89\u8e0f\u505aSQL\u7684\u5e73\u53f0\u30022016\u5e74\u57fa\u4e8e\u541e\u5410\u91cf\u7684\u4e0a\u7ebf\uff0c\u6709\u4e86spark streaming\uff0c\u540c\u5e74\u8003\u8651\u5230\u6027\u80fd\u548c\u6d41\u8ba1\u7b97\u7684\u75db\u70b9\uff0c\u628a\u76ee\u5149\u6295\u5411\u4e86Flink\u3002\u5230\u4e862018\u5e74\uff0cFlink\u662f\u82cf\u5b81\u6d41\u8ba1\u7b97\u57fa\u7840\u5e73\u53f0\u91cd\u8981\u7684\u76ee\u6807\u9879\u76ee\uff0c\u5c06\u4e1a\u52a1\u63a8\u5230Flink\u4e0a\u505a\uff0c\u6bd4\u5982\u8bf4Flink\u7684\u5f00\u53d1\u5e73\u53f0\u3001\u7ba1\u7406\u5e73\u53f0\u7b49\u7b49\u4e00\u7cfb\u5217\u914d\u5957\u7684\u4e1a\u52a1\u4e0a\u7ebf\u3002<\/p>\n
\u518d\u770b\u6d41\u8ba1\u7b97\u5728\u82cf\u5b81\u7684\u914d\u5957\u3002Storm2014\u5e74\u5c31\u7528\u4e86\uff0c\u6574\u4f53\u89c4\u6a21\u548c\u5360\u6bd4\u6bd4\u8f83\u591a50%\uff0c\u7269\u7406\u673a1000\u591a\uff0c\u865a\u62df\u673a4000+\uff0c\u4efb\u52a1\u65701500+\u3002\u82cf\u5b81\u505aFlink\u8d77\u6b65\u8f83\u665a\uff0c\u4f46\u8c03\u7814\u65f6\u95f4\u6bd4\u8f83\u957f\uff0c\u76ee\u524d\u5360\u6bd4\u5360\u523015%\uff0c\u8ba1\u5212\u672a\u67651-2\u5e74\u90fd\u4f1a\u628a\u6d41\u8ba1\u7b97\u5e95\u5c42\u5e73\u53f0\u6240\u6709\u7684\u90fd\u6295\u5165\u5230Flink\u4e0a\u3002<\/p>\n
\u4e3a\u4ec0\u4e48\u9009\u62e9Flink\uff1f\u4ece\u82cf\u5b81\u4e1a\u52a1\u5c42\u9762\u6765\u770b\uff0c\u9996\u5148Storm\u548c2.0\u7684spark streaming\u90fd\u4f7f\u7528\u7684\u662fprocessing time\uff0c\u5b83\u5904\u7406\u7684\u65f6\u95f4\u8fdc\u665a\u4e8e\u6570\u636e\u4ea7\u751f\u7684\u65f6\u95f4\uff0c\u4ea7\u751f\u5927\u91cf\u7684\u6570\u636e\u518d1\u62162\u5c0f\u65f6\u5806\u79ef\u540e\uff0c\u6570\u636e\u662f\u9519\u8bef\u7684\uff0c\u6ca1\u529e\u6cd5\u63a5\u53d7\u7684\u3002\u7b2c\u4e8c\u4e2a\u5c31\u662f\u5bb9\u9519\u80fd\u529b\uff0cStorm\u53ea\u80fd\u505a\u5230 Exacly once\u3002\u7b2c\u4e09\u4e2a\u5c31\u662f\u4e2d\u95f4\u72b6\u6001\u7684\u7ef4\u62a4\uff0cStorm\u7ef4\u62a4\u4e0d\u63d0\u4f9bstate\u7684\u4e1c\u897f\uff0c\u505a\u4e2d\u95f4\u72b6\u6001\u7684\u7ef4\u62a4\u53ea\u80fd\u4f9d\u9760\u7b2c\u4e09\u65b9\u6765\u505a\uff0c\u90a3\u4e48\u4e1a\u52a1\u5f00\u53d1\u7684\u65f6\u5019\u6210\u672c\u76f8\u5bf9\u9ad8\u4e00\u4e9b\uff0c\u4f1a\u5199\u5f88\u591a\u7684\u4ee3\u7801\uff0c\u6548\u679c\u4e5f\u4e0d\u662f\u5f88\u597d\uff0c\u56e0\u4e3a\u5b83\u7528\u7b2c\u4e09\u65b9\u7ec4\u4ef6\u7684\u65f6\u5019\uff0c\u6709\u53ef\u80fd\u51fa\u73b0\u4e00\u81f4\u6027\u95ee\u9898\uff0c\u6216\u91cd\u542f\u540e\u8ba1\u7b97\u7ed3\u679c\u4e0d\u51c6\u786e\u7b49\u7b49\u3002\u4ece\u82cf\u5b81\u7684\u5e73\u53f0\u6765\u770b\uff0c\u4e24\u8005\u90fd\u6ca1\u6709\u529e\u6cd5\u517c\u987e\u9ad8\u541e\u5410\u3001\u4f4e\u5ef6\u65f6\uff0c\u4e24\u4e2a\u6027\u80fd\u4e92\u8865\uff0c\u4f46\u4e0d\u80fd\u517c\u987e\u3002<\/p>\n
\u8c03\u7814\u9636\u6bb5\uff0c\u5bf9Flink\u7684\u5404\u4e2a\u4f18\u52bf\u505a\u8fc7\u7b80\u5355\u7684\u5217\u8868\uff0cFlink\u662f\u4e00\u4e2a\u8bbe\u8ba1\u7684\u6bd4\u8f83\u4f18\u96c5\u7684\u6d41\u8ba1\u7b97\u6846\u67b6\uff0c\u5b83\u80fd\u517c\u987e\u5230\u4f4e\u5ef6\u65f6\u548c\u9ad8\u541e\u5410\uff0c\u540c\u65f6\u652f\u6301Exacly once\u3002<\/p>\n
\u8c08\u8c08\u5728\u529f\u80fd\u6269\u5c55\u3001\u670d\u52a1\u5e73\u53f0\u5f00\u53d1\u4ee5\u53ca\u8fd0\u884c\u65f6\u7ba1\u7406\u7cfb\u7edf\u65b9\u9762\u7684\u7ecf\u9a8c\u5206\u4eab\u3002<\/strong><\/p>\n
\u9996\u5148\u8bf4\u4e00\u4e0b\u529f\u80fd\u6269\u5c55\u3002Flink sql\u4ece\u5b83\u51fa\u6765\u5c31\u6bd4\u8f83\u706b\uff0c\u4e3a\u4ec0\u4e48\uff0c\u56e0\u4e3a\u5f88\u7b80\u5355\uff0cSQL\u5bf9\u4e8e\u7a0b\u5e8f\u5458\u6765\u8bf4\u975e\u5e38\u719f\u6089\uff0c\u5f00\u53d1\u6210\u672c\u975e\u5e38\u4f4e\uff0c\u540c\u65f6\u7531\u4e8eSQL\u662f\u4e00\u4e2a\u7edf\u4e00\u7684\u6807\u51c6\uff0c\u5b83\u7684\u8fc1\u79fb\u6210\u672c\u975e\u5e38\u4f4e\u7684\uff0c\u5982\u679c\u4eca\u5929\u7528\u4e86subeg SQL\uff0c\u660e\u5929\u51fa\u7684\u65b0\u7684\u7ec4\u4ef6\uff0c\u53ef\u4ee5\u975e\u5e38\u8f7b\u677e\u7684\u8fc1\u79fb\u5230\u5176\u5b83\u7684\u7ec4\u4ef6\u4e0a\uff0c\u5b83\u662f\u901a\u7528\u7684\u8bed\u6cd5\u3002\u6240\u4ee5\u82cf\u5b81FlinkSQL\u4e0a\u505a\u4e86\u4e00\u7cfb\u5217\u7684\u8bed\u6cd5\u6269\u5c55\u3002\u53e6\u5916Connectors\uff0c\u53ef\u4ee5\u6253\u901a\u4e0d\u540c\u7ec4\u4ef6\u7684\u8054\u7cfb\u3002<\/p>\n
\u6700\u540e\u7ed3\u5408\u4e1a\u52a1\u75db\u70b9\uff0c\u804a\u4e00\u4e0b\u5728\u8fd0\u884c\u65f6\u7684\u5b83\u7684\u7b97\u5b50\u52a8\u6001\u6269\u5bb9\u7f29\u5bb9\uff0c\u4ee5\u53caCheckpoint\u52a8\u6001\u8c03\u6574\uff0c\u6211\u4eec\u600e\u4e48\u5b9e\u73b0\u600e\u4e48\u628a\u5b83\u505a\u51fa\u6765\u7684\u3002<\/strong><\/p>\n
\uff081\uff09\u9996\u5148\u770b\u4e00\u4e0b\u8bed\u6cd5\u6269\u5c55\u3002\u56e0\u4e3a\u6211\u4eec\u4eceStormSQL\u5f00\u59cb\u5c31\u505a\u4e86\u7eafSQL\u7684\u5f00\u53d1\uff0c\u7eafSQL\u5f00\u53d1\u8d77\u7801\u8981\u652f\u6301DDL\u548cDML\uff0c\u4f46\u662fFlink\u793e\u533a\u660e\u786e\u7684\u8bb2\u8ff0\u5b83\u4e0d\u4f1a\u505aDDL\u7684\u4e8b\u60c5\uff0c\u8fd9\u4ef6\u4e8b\u7531\u6211\u4eec\u81ea\u5df1\u505a\u51fa\u6765\u3002\u7136\u540e\u662fDML\u8bed\u8a00\uff0c\u5bf9\u4e8e\u7535\u5546\u9886\u57df\u6765\u8bf4\u5f88\u5178\u578b\u7684\u4e8b\u60c5\u5c31\u662f\u7edf\u8ba1UV\uff0c\u5bf9\u4e8e\u8fd9\u79cd\u805a\u5408\u4e5f\u505a\u4e86\u5927\u91cf\u652f\u6301\uff0c\u652f\u6301on\u00a0 group by\uff0cover\u00a0 window\uff0cgroup by window\u3002\u540c\u65f6Flink\u7248\u672c\u6709\u5b83\u7684\u5c40\u9650\u6027\uff0c\u5b83\u7684\u6d41\u6570\u636e\u548c\u9759\u6001\u6570\u636e\u662f\u6ca1\u6709\u529e\u6cd5\u53bb\u505a\u4e92\u76f8\u64cd\u4f5c\u7684\uff0c\u7136\u540e\u6700\u540e\u8bf4\u4e00\u4e2abatch window\uff0c\u540e\u9762\u4f1a\u5177\u4f53\u7684\u8bf4\u8bf4\u3002<\/p>\n
count distinct\uff0c\u8fd9\u4e2a\u5f53\u65f6\u57fa\u4e8e0.003\u505a\u7684\uff0c\u5f53\u65f6\u793e\u533a\u6ca1\u6709\u63d0\u4f9b\uff0c\u6211\u4e2a\u4eba\u8ba4\u4e3a\u662f\u7531\u4e8e\u6574\u4f53\u4ee3\u7801\u7684\u62bd\u8c61\u4e0a\u7684\u95ee\u9898\uff0c\u5b83\u6ca1\u6709\u53bb\u505a\u6307\u5bfc\uff0c\u53ea\u80fd1.7\u53bb\u5b9e\u73b0\u4e86\uff0c\u65b9\u5f0f\u548c\u73b0\u4ee3\u793e\u533a\u51e0\u4e4e\u662f\u57fa\u672c\u4e0a\u4e00\u81f4\u7684\u3002<\/p>\n
$\"\"$ <\/a>\u591a\u4ecb\u7ecd\u4e00\u4e0bApprox count distinct\uff0c\u5b83\u7684\u76ee\u7684\u5176\u5b9e\u548ccount distinct\u8bed\u6cd5\u662f\u4e00\u6837\uff0c\u4e5f\u662f\u53bb\u91cd\u590d\u7684\u7ed3\u6784\uff0c\u4f46\u662f\u5b83\u7684\u76ee\u7684\u662f\u7528\u8f83\u5c0f\u7684\u8ba1\u7b97\u7cbe\u5ea6\u7684\u8bef\u5dee\u6362\u53d6\u5de8\u5927\u7684\u8ba1\u7b97\u8d44\u6e90\u7684\u8282\u7701\uff0c\u6bd4\u5982\u8bf4\u5185\u5b58\u3002\u540c\u65f6\u8fd9\u4e2a\u8bed\u6cd5\u7b26\u5408Calcite\u6807\u51c6\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u662f\u901a\u7528\u7684\u8bed\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u8fc1\u79fb\u5230\u5176\u5b83\u7684\u5f15\u64ce\u4e0a\u3002<\/p>\n
\u8fd9\u8fb9\u53ea\u80fd\u7c97\u7565\u7684\u8bb2\uff0c\u770b\u5b83\u600e\u4e48\u5de5\u4f5c\u7684\u3002\u9996\u5148\u4e00\u6761SQL\u8fdb\u6765\u8fdb\u5165Calcite\u505a\u8bed\u6cd5\u89e3\u6790\u3001\u53d8\u6362\u3002\u7136\u540e\u8f6c\u5230Data program\u7684\u65f6\u5019\uff0c\u6211\u4eec\u505a\u5b9a\u5236\u5316\u7684\u57fa\u6570\u548c\u51fd\u6570\uff0c\u57fa\u6570\u548c\u51fd\u6570\u4e0d\u6269\u5c55\u8bb2\u4e86\uff0c\u56e0\u4e3a\u5176\u5b9e\u6d89\u53ca\u7684\u7b97\u6cd5\u4e0d\u5c11\uff0c\u6211\u4eec\u5b9e\u73b0\u4e86\u4e00\u7cfb\u5217\u7684\u57fa\u6570\u7684\u51fd\u6570\uff0c\u8ba9\u7528\u6237\u9009\u62e9\u76f8\u5bf9\u5e94\u7684\u7cbe\u5ea6\uff0c\u7136\u540e\u5bf9\u5e94\u5b83\u7684\u8d44\u6e90\u6d88\u8017\uff0c\u8ba9\u7528\u6237\u81ea\u5df1\u53bb\u505a\u9009\u62e9\u3002\u7136\u540e\u56de\u5230\u6211\u4eecData program\u8fd9\u4e00\u5c42\uff0c\u8fdb\u800c\u8f6c\u5316\u6210\u7528\u6237\u9009\u62e9\u7684\u57fa\u7840\u65b9\u7a0b\u3002\u5230\u4e86\u4e0b\u4e00\u5c42\uff0c\u6bcf\u6761\u6570\u636e\u8fdb\u6765\u7684\u65f6\u5019\u5c06\u8fdb\u884c\u7d2f\u52a0\uff0c\u8f93\u51fa\u65f6\u53ef\u4ee5\u628a\u6570\u636e\u5411\u4e0b\u4e00\u5c42\u7684sink\u8fdb\u884c\u89e6\u53d1\u8ba1\u7b97\uff0c\u53ef\u4ee5\u63d0\u4f9b\u76f8\u5bf9\u5b8c\u7f8e\u7684\u5bb9\u9519\u80fd\u529b\u3002<\/p>\n
\uff082\uff09\u53e6\u5916\u4e00\u4e2aSQL Batch window\uff0c\u8fd9\u4e2a\u662f\u82cf\u5b81\u7279\u8272\u7684\u4e00\u4e2a\u540d\u8bcd\uff0c\u6211\u4eec\u770b\u4e00\u4e0b\u5b83\u4e1a\u52a1\u9700\u6c42\u7684case\uff0c\u5b83\u9700\u8981\u7edf\u8ba1\u6bcf\u65e5PV\u3001UV\uff0c\u6211\u4eec\u5728\u7ebf\u8ba1\u7b97\u8981\u6c42\u5ef6\u65f6\u5c3d\u53ef\u80fd\u4f4e\uff0c\u4e0d\u53ef\u80fd\u7b49\u5230\u6bcf\u5929\u7ed3\u675f\u7684\u65f6\u5019\u96f6\u70b9\u518d\u770b\u5230\u7ed3\u679c\uff0c\u8fd9\u4e2a\u4e0d\u80fd\u63a5\u53d7\u7684\u3002\u4e1a\u52a1\u7684\u9700\u6c42\u662f\u6bcf\u79d2\u90fd\u80fd\u5b9e\u65f6\u7684\u68c0\u6d4b\u5230PV\u3001UV\u7684\u53d8\u5316\uff0c\u8fd9\u4e2a\u4ece\u5f00\u59cb\u5230\u7b2c\u4e00\u79d2\u7b2c\u4e8c\u79d2\u7b2c\u4e09\u79d2\u90fd\u80fd\u770b\u5230\u7ed3\u679c\uff0c\u8fd9\u4e2a\u662f\u4e1a\u52a1\u80fd\u591f\u63a5\u53d7\u7684case\uff0c\u8fd9\u4e2a\u662f\u8f93\u51fa\u7684\u9891\u7387\uff0c\u8fd9\u4e2a\u9891\u7387\u662f\u53ef\u4ee5\u5b9a\u5236\u5316\u7684\u3002\u76f4\u5230\u8fd9\u4e2a\u7a97\u53e3\u7684\u7ed3\u675f\uff0c\u6211\u4eec\u7684\u7ed3\u679c\u4f1a\u88abreset\uff0c\u91cd\u65b0\u5f00\u59cb\u88ab\u8ba1\u7b97\uff0c\u8fd9\u4e2a\u662f\u82cf\u5b81\u5e38\u7528\u7684Batch window\u3002<\/p>\n
\u600e\u4e48\u7528SQL\u5b9e\u73b0Batch window\uff1f\u8fd9\u70b9\u4e0d\u96be\uff0c\u4f46\u600e\u4e48\u4f53\u73b0\u5230SQL\u8bed\u6cd5\uff0c\u53c8\u4e0d\u80fd\u7834\u574f\u6807\u51c6\u7684SQL\u8bed\u6cd5\u5462\uff1f\u6ed1\u52a8\u7a97\u53e3\u5b83\u662f\u53ef\u4ee5\u505a\u5230\u5f88\u77ed\u7684\u8f93\u51fa\uff0c\u4f46\u662f\u4e0d\u80fd\u56fa\u5b9a\u7a97\u53e3\uff0c\u7a97\u53e3\u6ed1\u52a8\u5230\u4e0b\u4e00\u79d2\u3002\u7b2c\u4e09\u6761\u5c31\u662f\u5b9a\u5236trigger\u3002\u7b2c\u56db\u6761\u5c31\u662fCascading window\uff0c\u5b83\u7684\u7a97\u53e3\u662f\u56fa\u5b9a\u7684\uff0c10\u70b9\u523011\u70b9\uff0c\u6570\u636e\u6ca1\u6709\u8d85\u51fa\u7684\u65f6\u5019\u662f\u4e0d\u4f1a\u88ab\u6ed1\u52a8\u7684\uff0c\u540c\u65f6\u505a\u5230\u53ca\u65e9\u7684\u8f93\u51fa\uff0c\u4f46\u662f\u5b83\u7684\u95ee\u9898\u662f\u6bcf\u6761\u6570\u636e\u90fd\u8f93\u51fa\uff0c\u4e0d\u80fd\u63a7\u5236\u8f93\u51fa\u9891\u7387\u7684\u3002\u7b2c\u4e8c\u70b9\u5982\u679cTPS\u975e\u5e38\u9ad8\uff0c\u4e00\u79d2\u4e00\u4e07\uff0c\u4e00\u79d2\u5341\u4e07DB\u5403\u4e0d\u4e0b\uff0c\u4f1a\u9020\u6210\u74f6\u9888\u3002<\/p>\n
\u6240\u4ee5\u6211\u4eec\u600e\u4e48\u5b9e\u73b0\u82cf\u5b81\u7684Batch window\uff1f\u6211\u4eec\u7528\u6700\u540e\u8bb2\u7684\u8fd9\u4e2a\uff0c\u52a0\u4e0aDDL\uff0c\u5b9a\u4e49\u8f93\u51fa\u7684\u95f4\u9694\uff0c\u7136\u540e\u518d\u4f7f\u7528\u6211\u4eec\u81ea\u5df1\u5b9e\u73b0\u7684Periodical sink\uff0c\u5b83\u4e3b\u8981\u7684\u76ee\u7684\u662f\u628a\u6bcf\u4e00\u6761\u8fdb\u6765\u7684\u6570\u636e\u90fd\u8fdb\u884c\u7f13\u5b58\uff0c\u5e76\u4e14\u80fd\u591f\u6839\u636e\u8f93\u51fa\u7684\u9891\u7387\u548c\u6570\u91cf\u7684\u9600\u503c\u8fdb\u884c\u5b9a\u91cf\u7684\u8f93\u51fa\uff0c\u6574\u4e2a\u94fe\u8def\u8fdb\u884c\u7684\u6570\u636e\u90fd\u4f1a\u89e6\u53d1\u8ba1\u7b97\uff0c\u6bcf\u4e2a\u6570\u636e\u51fa\u6765\u4e4b\u540e\u8fdb\u884c\u7f13\u5b58\uff0c\u65e7\u503c\u88ab\u65b0\u503c\u8986\u76d6\uff0c\u76f4\u5230task\u8f93\u51fa\u7684\u65f6\u5019\uff0c\u9996\u5148\u6ee1\u8db3\u5b9a\u6027\u5b9a\u91cf\u7684\u8f93\u51fa\uff0c\u7b2c\u4e8c\u4e2a\u4e0d\u4f1a\u5bf9\u4e8e\u4e0b\u5c42\u9020\u6210\u592a\u591a\u7684\u538b\u529b\uff0c\u56e0\u4e3a\u5b9a\u70b9\u5b9a\u65f6\u8f93\u51fa\uff0cTBS\u53ea\u67092000\u5de6\u53f3\u3002\u8fd9\u4e2a\u65f6\u95f4\u6211\u89c9\u5f97\u8fd8\u662f\u6709\u8fdb\u4e00\u6b65\u6269\u5c55\u6216\u8005\u662f\u4f18\u5316\u7684\u7a7a\u95f4\uff0c\u6bd4\u5982\u8bf4\u5176\u5b9e\u8fd9\u4e2a\u7684\u8bdd\u53ea\u5728sink\u5c42\u9762\u89e3\u51b3\u4e86\u9700\u6c42\uff0c\u5982\u679c\u6211\u4eec\u5728Batch window\u91cc\u9762\u4e0d\u628a\u6570\u636e\u8fdb\u884c\u4e00\u6761\u6761\u5904\u7406\uff0c\u800c\u662f\u8fdb\u884c\u6279\u5904\u7406\uff0c\u6211\u89c9\u5f97\u8ba1\u7b97\u7684\u6548\u679c\u6548\u7387\u4f1a\u771f\u6b63\u63d0\u5347\uff0c\u8fd9\u4e2a\u53ef\u80fd\u6211\u4eec\u540e\u9762\u4f1a\u53bb\u505a\u8fd9\u4ef6\u4e8b\u60c5\u3002<\/p>\n
\u521a\u624d\u975e\u5e38\u7b80\u5355\u7684\u4e3e\u4e86\u51e0\u4e2a\u4f8b\u5b50\uff0c\u8bf4\u4e86\u4e00\u4e0bSQL\u7684\u6269\u5c55\u3002\u8bf4\u4e00\u4e0bConnectors\u3002\u8fd9\u4e2a\u6211\u4e0d\u4f1a\u591a\u8bf4\uff0c\u56e0\u4e3a\u5185\u5bb9\u4e0d\u591a\uff0c\u6211\u4f1a\u4e3e\u4f8b\u5b50\u6765\u8bf4\u4e00\u8bf4\u3002<\/p>\n
$\"\"$ <\/a><\/p>\n
HBase Sink\u5b9e\u73b0\u4e24\u79cd\u6a21\u5f0f\uff0c\u4e3b\u8981\u662f\u8003\u8651\u5b83\u7684\u5bb9\u9519\u6027\uff0c\u73b0\u5728\u4e0d\u4f1a\u53ea\u6ee1\u8db3\u4e8e\u7aef\u5230\u7aef\u6b63\u7684\u5bb9\u9519\uff0c\u6211\u4eec\u8fd8\u5e0c\u671b\u5b83\u80fd\u505a\u5230Flink\u548c\u7ec4\u4ef6\u4e4b\u95f4\u7684\u5bb9\u9519\u3002\u4e8e\u662f\u6211\u4eec\u9488\u5bf9\u4e0d\u540c\u7684\u4e1a\u52a1\u573a\u666f\u505a\u4e86\u5e42\u7684\u63d2\u5165\u6a21\u5f0f\uff0c\u4e00\u79cd\u662fmini\u00a0 wbatch\uff0c\u5bb9\u9519\uff0c\u6709\u53ef\u80fd\u4f1aFailover\uff0c\u8981\u6c42Failover\u540e\u4e1a\u52a1\u91cd\u53d1\u7684\u6570\u636e\u4e0eFail\u524d\u5b8c\u5168\u4e00\u81f4\uff0c\u540c\u65f6\u6211\u8981\u6c42table\u662f\u5355\u7248\u672c\u7684\uff0c\u8fd9\u4e48\u4e00\u4e2asink\u3002\u540c\u65f6\u8003\u8651\u5230\u6548\u7387\u548c\u5b9e\u65f6\u6027\uff0c\u6211\u4eec\u4e5f\u505a\u4e86\u4e24\u79cd\u5199\u5165\u6a21\u5f0f\uff0c\u4e00\u4e2a\u662fone by one\u7684\u540c\u6b65\u5199\u5165\uff0c\u6548\u7387\u6bd4\u8f83\u9ad8\u3002\u8fd8\u6709mini batch\uff0c\u5f02\u6b65\u5199\u5165\u7684\uff0c\u5b83\u7684\u6f14\u65f6\u6bd4\u8f83\u9ad8\uff0c\u4f46\u662f\u53ef\u4ee5\u505a\u5230\u5b9a\u65f6\u548c\u5b9a\u91cf\u3002<\/p>\n
\u521a\u624d\u8bb2\u7684\u662f\u5e42\u7684\u63d2\u5165\u6a21\u5f0f\uff0c\u73b0\u5728\u8bb2\u975e\u5e42\u7b49\u63d2\u5165\u6a21\u5f0f\u3002Failover\u540e\u5199HBase\u7ed3\u679c\u4e0efail\u4e4b\u524d\u4e0d\u540c\u4f7f\u7528\u7684WAL\u673a\u5236\u3002\u6211\u4eec\u7528Checkpoint\u65f6\uff0c\u5c06mini batch\u5199\u5165\u5916\u90e8\u6587\u4ef6\u7cfb\u7edf\u3002Checkpoint\u5b8c\u6210\uff0c\u5c06mini batch\u5199HBase\u3002<\/p>\n
\u4e0b\u9762\u6765\u8bf4\u4e00\u8bf4\u4e1a\u52a1\u4e0a\u4e5f\u7ecf\u5e38\u9762\u5bf9\u7684\u8fd9\u4e48\u4e00\u4e2a\u95ee\u9898\uff0c\u5c31\u662f\u6269\u5bb9\u7f29\u5bb9<\/strong>\u7684\u95ee\u9898\u3002\u6211\u4eec\u770b\u4e00\u4e0b\u6d41\u7a0b\u7684\u5206\u6790\uff0c\u9996\u5148\u4e1a\u52a1\u5f00\u53d1\u4e24\u79cd\u6a21\u5f0f\uff0c\u4e00\u79cd\u662f\u5199SQL\uff0c\u8fd8\u6709\u4e00\u79cd\u662f\u5199Flink SQL\uff0c\u8fd8\u6709\u4e00\u79cd\u662f\u7528Datastream API\u800c\u8fdb\u884c\u5f00\u53d1\u3002\u4e0a\u7ebf\u4e4b\u540e\u53d1\u73b0\u5e76\u884c\u4e0d\u591f\uff0c\u9700\u8981\u6269\u5bb9\uff0c\u6269\u5bb9\u7684\u8bdd\u5bf9\u4e8eSQL\u6765\u8bf4\uff0c\u6211\u80fd\u505a\u5230\u7684\u662f\u4ec0\u4e48\uff0c\u6211\u53ef\u4ee5\u7528\u539f\u751f\u7684Flink\u63d0\u4f9b\u7684\u53bb\u8fdb\u884c\u5de5\u4f5c\uff0c\u628a\u94fe\u8def\u4e0a\u7684\u8282\u70b9\u90fd\u8fdb\u884c\u6269\u5bb9\u6216\u8005\u7f29\u5bb9\uff0c\u540c\u65f6\u5bf9\u4e8e\u91cd\u65b0\u6253\u5305\u53d1\u5e03\uff0c\u7136\u540e\u518d\u53bb\u91cd\u65b0\u4e0a\u7ebf\u7684\u90a3\u4e9b\uff0c\u8fd9\u4e24\u79cd\u5f00\u53d1\u6a21\u5f0f\u90fd\u6709\u95ee\u9898\uff0cSQL\u7684\u5f00\u53d1\u9762\u5bf9\u53cc\u5341\u4e00\u96f6\u70b9\u7684\u5927\u4fc3\uff0c\u6211\u4eec\u9700\u8981\u6539\u4ee3\u7801\uff0c\u5e76\u4e14\u8fd8\u9700\u8981\u6709\u9ad8\u7684\u5ef6\u8fdf\uff0c\u4e1a\u52a1\u624d\u80fd\u4e0a\u7ebf\uff0c\u8fd9\u4e2a\u6211\u4eec\u4e0d\u80fd\u63a5\u53d7\u3002\u603b\u4f53\u5bf9\u4e8eSQL\u5f00\u53d1\u5b83\u7684\u6269\u5bb9\u662f\u4efb\u52a1\u7ea7\u522b\u7684\uff0c\u800c\u5bf9\u4e8eDatastream\u6210\u672c\u592a\u9ad8\u4e86\u3002<\/p>\n
\u6211\u4eec\u505a\u4e86Operator\uff0c\u6211\u4eec\u4e00\u5f00\u59cb\u8003\u8651\u662f\u4ecewrong time\u8003\u8651\u8fd9\u4e2a\u4e8b\u60c5\u7684\u3002\u5982\u679c\u8bf4\u6211\u4eec\u8981\u4ece\u8fd9\u4e00\u5c42\u505a\u7684\u8bdd\uff0c\u9996\u5148\u5bf9\u5143\u7801\u6539\u52a8\u6bd4\u8f83\u591a\uff0c\u7b2c\u4e8c\u4e2a\u4efb\u52a1\u76f8\u5bf9\u6bd4\u8f83\u590d\u6742\uff0c\u6211\u4eec\u9700\u8981\u91cd\u65b0\u751f\u6210\u4e0d\u540c\u7684job\uff0c\u540c\u65f6\u8fd8\u8981\u6709\u6211\u4eec\u81ea\u5df1\u8fd0\u884c\u65f6\u7684\u7ba1\u7406\u670d\u52a1\u7cfb\u7edf\uff0c\u6211\u4eec\u4f1a\u628a\u67d0\u4e2a\u9700\u8981\u53bbRESCALE\u7684 job\u62ff\u8fc7\u6765\u8fdb\u884c\u4fee\u6539\uff0c\u518d\u628a\u63d0\u4ea4\u65b0\u7684JOB graph\uff0c\u505a\u771f\u6b63\u6269\u7f29\u5bb9\u7684\u4e8b\u60c5\u3002\u8fd9\u8fb9\u7740\u91cd\u8bf4\u4e00\u4e0b\u8fd9\u4e2aDO RESCALE\u4f1a\u518d\u9886\u4efb\u52a1\uff0c\u8d44\u6e90\u4e0d\u4f1a\u91ca\u653e\u7684\uff0c\u8d44\u6e90\u90e8\u91ca\u653e\u610f\u5473\u7740\u54cd\u5e94\u7684\u65f6\u95f4\u975e\u5e38\u5feb\uff0c\u6211\u4eec\u4e5f\u505a\u8fc7\u5b9e\u9a8c\uff0c\u57fa\u672c\u4e0a\u5230\u8fbe\u79d2\u7ea7\u522b\u751a\u81f3\u767e\u6beb\u79d2\u7ea7\u522b\u505a\u5230\u6269\u5bb9\u7f29\u5bb9\uff0c\u8fd9\u4e2a\u5c31\u662f\u6211\u4eec\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n
$\"\"$ <\/a><\/p>\n
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