{"id":10986,"date":"2023-11-14T11:23:17","date_gmt":"2023-11-14T03:23:17","guid":{"rendered":"https:\/\/nj.transwarp.cn:8180\/?p=10986"},"modified":"2023-11-14T11:23:17","modified_gmt":"2023-11-14T03:23:17","slug":"slipstream-%e4%bb%bb%e5%8a%a1%e9%ab%98%e5%8f%af%e7%94%a8%ef%bc%88checkpoint%ef%bc%89%e8%af%b4%e6%98%8e","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=10986","title":{"rendered":"Slipstream \u4efb\u52a1\u9ad8\u53ef\u7528\uff08Checkpoint\uff09\u8bf4\u660e"},"content":{"rendered":"

\u6982\u8981\u63cf\u8ff0<\/h3>\n
\n

Checkpoint\u673a\u5236\u662f\u7528\u6237\u4fdd\u8bc1Job HA\u7684\u4e00\u4e2a\u624b\u6bb5\uff0cSlipstream\u53ef\u4ee5\u901a\u8fc7\u5b9a\u671f\u89e6\u53d1\u4efb\u52a1\u68c0\u67e5\u70b9\uff08Checkpoint\uff09\uff0c\u5c06\u5bf9\u5e94\u65f6\u523b\u7684\u4efb\u52a1\u72b6\u6001\u6301\u4e45\u5316\u5230\u5206\u5e03\u5f0f\u5b58\u50a8\u4e0a\u6765\u4fdd\u8bc1\u7cfb\u7edf\u5d29\u6e83\u4e0b\u8ba1\u7b97\u7684\u4e00\u81f4\u6027\uff0c\u4ee5\u6b64\u6765\u5b9e\u73b0\u6d41\u4efb\u52a1\u7684\u9ad8\u53ef\u7528\u3002<\/p>\n

\u8be6\u7ec6\u8bf4\u660e<\/h3>\n
\n

\u5f00\u542fCheckpoint\u793a\u4f8b<\/h4>\n
DROP STREAMJOB xlstreamjob;\nCREATE STREAMJOB xlstreamjob AS(\"insert into xl select * from demoxxll\")\njobproperties(\n\"morphling.result.auto.flush\"=\"true\",--\u81ea\u52a8Sink\uff0c\u53ea\u8981\u6709\u6570\u636e\u4ea7\u751f\u5c31\u7acb\u523bflush\u5230\u76ee\u6807\u8868\n\"morphling.job.enable.auto.failover\"=\"true\",--\u662f\u5426\u5f00\u542f\u5931\u8d25\u4efb\u52a1\u81ea\u52a8\u6062\u590d\n\"morphling.task.max.failures\"=\"5\",--\u4efb\u52a1\u5931\u8d25\u91cd\u8bd5\u6b21\u6570\n\"morphling.job.enable.checkpoint\"=\"true\",--\u4efb\u52a1\u542f\u7528HA\n\"morphling.job.checkpoint.interval\"=\"60000\"--Checkpoint\u7684\u9891\u7387\u3002\u5355\u4f4d\uff1a\u6beb\u79d2\n);<\/code><\/pre>\n
Checkpoint \u539f\u7406\u4ecb\u7ecd<\/h4>\n
\"file\"
\n\u5f53\u4efb\u52a1\u5f00\u542fCheckpoint\u65f6\uff0c\u6709\u4e00\u4e2aCheckpoint\u7ba1\u7406\u8005\uff1aCheckpointCoordinator\u4f1a\u6839\u636e\u8bbe\u7f6e\u7684Checkpoint Interval\u6765\u5b9a\u671f\u751f\u6210CheckpointBarrier\uff0c\u5e76\u5c06\u8be5CheckpointBarrier\u6ce8\u5165\u5230\u6d41\u4e2d\uff0c\u968f\u6570\u636e\u4e00\u8d77\u7ecf\u8fc7\u5404\u4e2aOperator\u5904\u7406\u3002<\/p>\n
\u6570\u636e\u6d41\u8f6c\u5982\u4e0a\u56fe\u6240\u793a\uff1a<\/p>\n
CheckpointBarrier(N-1,N) \u4e4b\u95f4\u7684\u72b6\u6001\u4f1a\u4fdd\u5b58\u4e3aCheckpoint N\uff0cCheckpointBarrier(N,N+1) \u4e4b\u95f4\u7684\u72b6\u6001\u4f1a\u4fdd\u5b58\u4e3aCheckpoint N+1\u3002\u82e5\u5f53CheckpointBarrier N+1\u8fd8\u672a\u5904\u7406\u5b8c\u4efb\u52a1\u5c31\u5931\u8d25\u4e86\uff0c\u5219\u4efb\u52a1\u4f1a\u4eceCheckpoint N\u6062\u590d\uff0c\u91cd\u65b0\u62c9\u53d6CheckpointBarrier N\u4e0eN+1\u4e4b\u95f4\u7684\u6570\u636e\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n
\u8fd9\u79cd\u5f02\u6b65\u6ce8\u5165\u7684\u65b9\u5f0f\u4e0d\u4f1a\u963b\u585e\u6570\u636e\u7684\u5904\u7406\uff0c\u4e0d\u6253\u4e71\u6570\u636e\u7684\u987a\u5e8f\u3002<\/p>\n
\u4e24\u79cd\u8bed\u4e49<\/h4>\n
\u5728\u6d41\u4efb\u52a1\u9ad8\u53ef\u7528\u4e2d\uff0c\u5b58\u5728\u4e24\u79cd\u8bed\u4e49\uff1aAt-Least-Once<\/strong> \u548c Exactly-Once<\/strong>\u3002<\/p>\n
\u72b6\u6001 Exactly-Once<\/strong>
\nSlipstream\u5929\u7136\u652f\u6301\u72b6\u6001Exactly-Once\uff0c\u5373\u6bcf\u6761\u6570\u636e\u5728\u4e00\u4e2aOperator\u91cc\u53ea\u4f1a\u88ab\u8ba1\u7b97\u4e00\u6b21\uff0c\u6bd4\u5982\u5728word count\u573a\u666f\uff0c\u4e00\u4e2a\u65f6\u95f4\u7a97\u53e3\u5185\uff0c\u65e0\u8bba\u4efb\u52a1\u91cd\u542f\u51e0\u6b21\uff0c\u540c\u4e00\u6761\u8bb0\u5f55\u4e0d\u4f1a\u88ab\u8ba1\u6570\u4e24\u6b21\u3002<\/p>\n
\u7aef\u5230\u7aef At-Least-Once<\/strong>
\n\u7aef\u5230\u7aefAt-Least-Once\u5373\u81f3\u5c11\u8f93\u51fa\u4e00\u6b21\uff0c\u786e\u4fdd\u6570\u636e\u4e0d\u4e22\u5931\uff0c\u4f46\u4f1a\u5b58\u5728\u8f93\u51fa\u91cd\u590d\u7684\u60c5\u51b5\u3002<\/p>\n
\u4efb\u52a1\u91cd\u542f\uff0c\u4f1a\u4ece\u4e0a\u4e00\u4e2acheckpoint\u6062\u590d\u3002\u867d\u7136\u8ba1\u7b97\u7ed3\u679c\u662f\u4e00\u81f4\u7684\uff0c\u4f46\u662f\u7ed3\u679c\u53ef\u80fd\u4f1a\u88ab\u91cd\u590d\u8f93\u51fa\u3002<\/p>\n
\u5982\u679c\u5f53\u8f93\u51fa\u5b58\u50a8\u652f\u6301\u5e42\u7b49\u64cd\u4f5c\uff08\u6bd4\u5982hbase\u76f8\u540ckey\u503c\u7684\u8bb0\u5f55\u4f1a\u8986\u76d6\uff09\uff0c\u5219\u6548\u679c\u4e0eExactly-Once\u76f8\u540c\u3002<\/p>\n
\"file\"<\/p>\n
\u7aef\u5230\u7aef Exactly-Once<\/strong>
\n\u7aef\u5230\u7aef Exactly-Once\u5bf9\u8f93\u51fa\u6765\u8bf4\uff0c\u4e00\u6b21\u8ba1\u7b97\u7ed3\u679c\u53ea\u4f1a\u5b58\u4e00\u4efd\uff0c\u4e0d\u4f1a\u6709\u91cd\u590d\u6570\u636e\u3002<\/p>\n
\u7aef\u5230\u7aefExactly-Once\u4f9d\u9760\u4e24\u9636\u6bb5\u63d0\u4ea4\u6765\u786e\u4fddcheckpoint\u5b8c\u6210\uff0c\u6570\u636e\u624d\u5bf9\u5916\u53ef\u89c1\uff0c\u9700\u8981\u4e0b\u6e38\u5b58\u50a8\u63d0\u4f9b\u4e8b\u52a1\u529f\u80fd\u6765\u652f\u6301\u3002<\/p>\n
\"file\"<\/p>\n
\u6d41\u4efb\u52a1\u573a\u666f\u4e2d\u5e38\u7528Kafka\u4f5c\u4e3a\u7ed3\u679c\u8f93\u51fa\uff0c\u5982\u679c\u60f3\u8981\u652f\u6301\u7aef\u5230\u7aefExactly-Once\uff0c\u9700\u8981\u5f00\u542fKafka\u4e8b\u52a1\uff0c\u6bcf\u4e00\u6b21Checkpoint\u65f6\u90fd\u4f1a\u4ea7\u751f\u4e00\u4e2a\u5bf9\u5e94\u7684\u4e8b\u52a1ID\uff0c\u53ea\u6709\u5f53Checkpoint\u5b8c\u6210\u65f6\uff0c\u624d\u63d0\u4ea4\u5bf9\u5e94\u4e8b\u52a1\uff0c\u8be5\u4e8b\u52a1\u5bf9\u5e94\u7684\u6570\u636e\u5bf9\u4e0b\u6e38\u53ef\u89c1\u3002<\/p>\n
\u6ce8: \u4e0b\u6e38\u6d88\u8d39\u5bf9\u5e94\u7684topic\u65f6\uff0c\u4e5f\u9700\u8981\u5f00\u542f\u53c2\u6570\uff0c\u53ea\u6d88\u8d39\u5df2\u63d0\u4ea4\u4e8b\u52a1\u7684\u6570\u636e\u3002
\n\u56e0\u4e3a\u4e24\u9636\u6bb5\u63d0\u4ea4\u9700\u8981\u7b49checkpoint\u5b8c\u6210\uff0c\u671f\u95f4\u6570\u636e\u624d\u53ef\u89c1\uff0c\u6240\u4ee5\u4f1a\u6709\u4e00\u4e2acheckpoint interval\u7684\u5ef6\u65f6\u3002<\/p>\n
\u5f00\u542fCheckpoint\u65f6\uff0cKafka Consumer\u7684\u504f\u79fb\u91cf\u91cd\u7f6e\u7b56\u7565<\/h4>\n
\u542f\u52a8\u6d41\u4efb\u52a1\u65f6\uff0c\u4ecekafka\u4e2d\u8bfb\u53d6record\u8d77\u59cboffset\u7b56\u7565\u3002\u82e5\u65e0checkpoint\uff0c\u6216checkpoint\u4e2d\u65e0\u504f\u79fb\u91cf\uff0c\u5219\u4f7f\u7528\u7b56\u7565\u3002<\/p>\n
\u91cd\u7f6e\u7b56\u7565\uff1a<\/p>\n
    \n
  • \n
    \u82e5\u4efb\u52a1\u6ca1\u6709\u5f00\u542fcheckpoint<\/p>\n
      \n
    • \u6ca1\u6709\u8bbe\u7f6e transwarp.consumer.reset.offset.strategy \u60c5\u51b5\u4e0b\uff0coffset\u4ee5kafka\u9ed8\u8ba4\u65b9\u5f0f\uff0c\u6700\u65b0\u6216\u8005\u4e0a\u4e00\u6b21commit\u7684\u4f4d\u7f6e\u5f00\u59cb\u6d88\u8d39<\/li>\n
    • \u82e5\u8bbe\u7f6e\u4e86 transwarp.consumer.reset.offset.strategy \u5219\u6839\u636e\u88681\u4e2d\u7684\u64cd\u4f5c\u8fdb\u884coffset\u91cd\u7f6e<\/li>\n<\/ul>\n<\/li>\n
    • \n
      \u82e5\u4efb\u52a1\u5f00\u542f\u4e86checkpoint<\/p>\n
        \n
      • \u5982\u679c\u7b2c\u4e00\u6b21\u6267\u884c\uff0c\u6216\u8005\u65b0\u589e\u4e86kafka partition\uff0coffset\u91cd\u7f6e\u65b9\u5f0f\u540c\u201c\u6ca1\u6709\u5f00\u542fcheckpoint\u201d\u76f8\u540c<\/li>\n
      • \u5982\u679c\u4efb\u52a1\u5df2\u7ecf\u5b58\u5728checkpoint\u6570\u636e\uff0coffset\u91cd\u7f6e\u4ececheckpoint\u4e2d\u83b7\u53d6\uff0ctranswarp.consumer.reset.offset.strategy \u8fd9\u4e2a\u53c2\u6570\u65e0\u6548<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
        Checkpoint \u4e0d\u540c\u6a21\u5f0f<\/h4>\n
        Standalone(8.0\u5f00\u59cb\u5df2\u4e0d\u652f\u6301\uff09<\/strong><\/p>\n
        \u8be5\u6a21\u5f0f\u4e0b\uff0cTask\u72b6\u6001\u6570\u636e\u5199\u5165HDFS\uff0c\u5e76\u5c06\u5bf9\u5e94\u5143\u4fe1\u606f\u6c47\u62a5\u7ed9Server\u3002Server\u63a5\u6536Checkpoint\u5143\u4fe1\u606f\uff0c\u5e76\u5c06\u5176\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\u3002\u6240\u4ee5\u5982\u679c\u5f53Server\u5f02\u5e38\u9000\u51fa\u6216\u91cd\u542f\uff0c\u5bf9\u5e94\u7684\u5143\u6570\u636e\u4f1a\u4e22\u5931\uff0c\u5b9e\u7528\u6027\u4e0d\u5f3a\u3002\u6240\u4ee5\u8be5\u6a21\u5f0f\u5728TDH 8.0\u540e\u5c06\u4e0d\u518d\u652f\u6301\u3002<\/p>\n
        Zookeeper<\/strong>
        \n\u4eceTDH 6.2.2\u5f00\u59cb\uff0c\u9ed8\u8ba4\u5f00\u542fZookeeper\u6a21\u5f0f\u3002
        \n\u8be5\u6a21\u5f0f\u4e0eStandalone\u6a21\u5f0f\u76f8\u540c\u7684\u662f\uff0cTask\u72b6\u6001\u6570\u636e\u4f1a\u5199\u5165HDFS\u3002
        \n\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0cCheckpoint\u5143\u6570\u636e\u4f1a\u5199\u5165zookeeper\u3002\u6240\u4ee5\u5f53Server\u91cd\u542f\u4e5f\u4e0d\u5f71\u54cd\u8fd9\u90e8\u5206\u6570\u636e\u7684\u5b58\u50a8\uff0c\u4efb\u52a1\u4f9d\u7136\u53ef\u4ee5\u4ece\u4e0a\u4e00\u6b21\u9000\u51fa\u65f6\u7684\u72b6\u6001\u5f00\u59cb\u8ba1\u7b97\u3002<\/p>\n
        Kafka<\/strong>
        \n\u4eceTDH 8.0\u5f00\u59cb\uff0cSlipstream\u589e\u52a0\u4e86Kafka\u6a21\u5f0f\u3002
        \nZookeeper\u6a21\u5f0f\u867d\u7136\u7a33\u5b9a\uff0c\u4f46\u662f\u5b58\u5728\u4e24\u4e2a\u95ee\u9898\uff1a<\/p>\n
          \n
        1. \n
          \u5f53\u72b6\u6001\u4e0d\u5927\u7684\u60c5\u51b5\u4e0b\uff0c\u5199HDFS\u4f1a\u51fa\u73b0\u5c0f\u6587\u4ef6\u95ee\u9898\uff0c\u82e5Checkpoint Interval\u8f83\u5c0f\uff0cTask\u6570\u91cf\u8f83\u591a\uff0c\u4f1a\u7ed9HDFS\u5e26\u6765\u538b\u529b\u3002<\/p>\n<\/li>\n
        2. \n
          Executor\u9700\u8981\u5c06\u5143\u4fe1\u606f\u901a\u8fc7Akka\u901a\u4fe1\u6c47\u62a5\u7ed9Server\uff0c\u5f53Task\u8f83\u591a\uff0cCheckpoint\u9891\u7387\u8f83\u9ad8\u7684\u60c5\u51b5\u4e0b\u4f1a\u7ed9Server\u5e26\u6765\u538b\u529b\u3002<\/p>\n<\/li>\n<\/ol>\n
          Kafka\u6a21\u5f0f\u4e0b\uff0cTask\u72b6\u6001\u6570\u636e\u4f1a\u5199\u5165Kafka\u5bf9\u5e94\u7684Topic\u4e2d\uff0cServer\u4f1a\u6d88\u8d39\u8be5topic\u6765\u786e\u8ba4Checkpoint\u662f\u5426\u5b8c\u6210\uff0c\u5e76\u5c06\u5143\u4fe1\u606f\u518d\u5199\u5165\u53e6\u4e00\u4e2aTopic\u4e2d\u3002\u8be5\u65b9\u5f0f\u89e3\u8026\u4e86Executor\u4e0eServer\u4e4b\u95f4\u7684Akka\u901a\u4fe1\uff0c\u5e76\u4e14\u501f\u52a9Kafka\u7684\u9ad8\u541e\u5410\u80fd\u529b\uff0c\u8f7b\u677e\u5e94\u5bf9Checkpoint\u9891\u7e41\u4e14Task\u8f83\u591a\u7684\u573a\u666f\u3002<\/p>\n
          \u4f7f\u7528\u65f6\uff0c\u4efb\u52a1\u5728\u5f00\u542fCheckpoint\u65f6\u9ed8\u8ba4\u9009\u62e9Zookeeper\u6a21\u5f0f\uff0c\u5982\u679c\u8981\u9009\u62e9Kafka\u6a21\u5f0f\u9700\u8981\u5728\u4efb\u52a1\u53c2\u6570\u4e2d\u6dfb\u52a0morphling.checkpoint.backend=kafka\u6765\u6307\u5b9a\u3002<\/p>\n
          \u5f15\u64ce\u652f\u6301\u540c\u65f6\u8fd0\u884cZookeeper\u6a21\u5f0f\u7684\u4efb\u52a1\u548cKafka\u6a21\u5f0f\u7684\u4efb\u52a1\u3002<\/p>\n
          Checkpoint \u7684\u53c2\u6570\u914d\u7f6e<\/h4>\n
          \u5f15\u64ce\u7ea7\u522b\uff08server\uff09\u53c2\u6570<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
          \u540d\u79f0<\/th>\n\u63cf\u8ff0<\/th>\n\u53d6\u503c<\/th>\n<\/tr>\n<\/thead>\n
          spark.morphling.recovery.mode<\/td>\n\u91c7\u7528\u7684HA\u6a21\u5f0f\u3002\u5982\u679c\u9700\u8981\u652f\u6301Exactly Once\uff0c\u5219\u5e94\u5c06\u6b64\u8bbe\u7f6e\u914d\u7f6e\u4e3aZookeeper\u3002<\/td>\nzookeeper<\/td>\n<\/tr>\n
          spark.morphling.taskstate.backend<\/td>\nTask\u72b6\u6001\u4fe1\u606f\u7684\u5b58\u50a8\u7cfb\u7edf\uff0c\u5f53\u524d\u53ea\u652f\u6301filesystem\uff0c\u5373\u5b58\u653e\u5728\u6587\u4ef6\u7cfb\u7edf\u3002<\/td>\nfilesystem<\/td>\n<\/tr>\n
          spark.morphling.taskstate.checkpoint.directory<\/td>\nMorphling Task\u4fdd\u5b58\u72b6\u6001\u4fe1\u606f\u7684checkpoints\u7684\u5730\u5740\u3002\u901a\u5e38\u5efa\u8bae\u653e\u5728\u5206\u5e03\u5f0f\u6587\u4ef6\u7cfb\u7edf\uff0c\u4ee5\u4fdd\u8bc1\u4e0d\u540c\u7684Executor\u90fd\u80fd\u8bbf\u95ee\u3002<\/td>\nhdfs:\/\/xxx\/checkpoints<\/td>\n<\/tr>\n
          spark.morphling.completed.checkpoints.storage.dir<\/td>\nspark.morphling.recovery.mode=zookeeper\u65f6\u9700\u914d\u7f6e\uff0c\u7528\u4e8e\u914d\u7f6eMorphling Driver\u7aef\u4fdd\u5b58\u4efb\u52a1\u72b6\u6001\u7684checkpoints\u5730\u5740\u3002<\/td>\n\/morphling\/completedcheckpoints<\/td>\n<\/tr>\n
          spark.morphling.zookeeper.quorum<\/td>\nZookeeper\u7684quorum\u3002<\/td>\nlocalhost:2181<\/td>\n<\/tr>\n
          spark.morphling.zookeeper.root.path<\/td>\nZookeeper\u5b58\u653e\u72b6\u6001\u4fe1\u606f\u7684\u6839\u8282\u70b9\u3002<\/td>\n\/morphling<\/td>\n<\/tr>\n
          spark.morphling.zookeeper.namespace<\/td>\nZookeeper\u4e0a\u5b58\u50a8\u4fe1\u606f\u7684\u547d\u540d\u7a7a\u95f4\uff0c\u7528\u4e8e\u533a\u5206\u591a\u96c6\u7fa4\u7684\u73af\u5883\uff0c\u4e00\u822c\u53ef\u4ee5\u91c7\u7528\u96c6\u7fa4\u540d\uff0c\u5982slipstream1\u3002<\/td>\n\/default<\/td>\n<\/tr>\n
          spark.morphling.zookeeper.checkpoints.path<\/td>\nZookeeper\u5b58\u50a8checkpoint\u5143\u4fe1\u606f\u7684\u76ee\u5f55\u3002<\/td>\n\/checkpoints<\/td>\n<\/tr>\n
          spark.morphling.submitted.job.path<\/td>\nZookeeper\u5b58\u50a8\u5f53\u524d\u63d0\u4ea4\u7684\u6d41\u4efb\u52a1\u4fe1\u606f\u7684\u76ee\u5f55\u3002<\/td>\n\/runningjobs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \u4efb\u52a1\u7ea7\u522b\uff08job\uff09\u53c2\u6570<\/strong><\/p>\n\n\n\n\n\n\n\n\n
          \u540d\u79f0<\/th>\n\u63cf\u8ff0<\/th>\n\u53d6\u503c<\/th>\n<\/tr>\n<\/thead>\n
          morphling.task.max.failures<\/td>\n\u4efb\u52a1\u5931\u8d25\u91cd\u8bd5\u6b21\u6570\uff0c-1\u8868\u793a\u4e0d\u8fdb\u884c\u91cd\u8bd5\u6062\u590d\u3002<\/td>\n-1\/\u81ea\u5b9a\u4e49<\/td>\n<\/tr>\n
          morphling.job.enable.checkpoint<\/td>\n\u51b3\u5b9a\u8be5\u4efb\u52a1\u662f\u5426\u542f\u7528HA\u3002<\/td>\ntrue\/false<\/td>\n<\/tr>\n
          morphling.job.checkpoint.interval<\/td>\nCheckpoint\u7684\u9891\u7387\u3002\u5355\u4f4d\uff1a\u6beb\u79d2\u3002<\/td>\n60000\/\u81ea\u5b9a\u4e49<\/td>\n<\/tr>\n
          morphling.job.enable.auto.failover<\/td>\n\u662f\u5426\u5141\u8bb8\u5931\u8d25\u4efb\u52a1\u81ea\u52a8\u6062\u590d\uff0c\u914d\u5408morphling.task.max.failues\u4f7f\u7528\u3002<\/td>\ntrue\/false<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          Checkpoint \u6ce8\u610f\u4e8b\u9879<\/h4>\n
          Checkpoint Interval \u5927\u5c0f\u8bbe\u7f6e<\/strong>
          \n\u4e3a\u4e86\u5c3d\u91cf\u51cf\u5c0fCheckpoint\u5bf9\u541e\u5410\u7684\u5f71\u54cd\uff0c\u5efa\u8baeCheckpoint Interval\u5927\u5c0f\u8bbe\u7f6e\u5206\u949f\u7ea7\u522b\u3002
          \n\u5982\u679c\u4f7f\u7528Zookeeper\u6a21\u5f0f\uff0c\u63a8\u835010\u5206\u949f\u53ca\u4ee5\u4e0a\uff1b
          \n\u5982\u679c\u4f7f\u7528Kafka\u6a21\u5f0f\uff0c\u53ef\u4ee5\u652f\u63011\u5206\u949f\u4e00\u6b21\u7684\u9891\u7387\u3002<\/p>\n
          Checkpoint Expire<\/strong>
          \n\u6bcf\u4e2aCheckpoint\u90fd\u8bbe\u6709\u8fc7\u671f\u65f6\u95f4\uff08\u9ed8\u8ba41\u5206\u949f\uff09\uff0c\u5f531\u5206\u949f\u4e4b\u5185\u4ecd\u7136\u6ca1\u6709\u786e\u8ba4\u6240\u6709\u7684task\u90fd\u5b8c\u6210\u8be5Checkpoint\u7684\u72b6\u6001\u5b58\u50a8\u5de5\u4f5c\uff0c\u5219Server\u5224\u65ad\u8be5Checkpoint\u8fc7\u671f\u3002
          \n\u4eceServer\u65e5\u5fd7\u91cc\u5c31\u53ef\u4ee5\u770b\u5230 Checkpoint[179] of job {default.ha_etl_job} expired before completing \u7684\u4fe1\u606f\u3002<\/p>\n
          Checkpoint\u4e3a\u4ec0\u4e48\u4f1a\u8fc7\u671f\uff1f<\/strong>
          \n\u5f53\u6570\u636e\u5904\u7406\u65f6\u95f4\u592a\u4e45\u3001Task\u72b6\u6001\u5b58\u50a8\u5904\u7406\u592a\u4e45\u3001checkpoint\u5904\u7406\u5b8c\u6210\u786e\u8ba4\u6d88\u606f\u6ca1\u6709\u53ca\u65f6\u5904\u7406\u90fd\u4f1a\u5bfc\u81f4Checkpoint\u8fc7\u671f\u3002
          \n\u539f\u56e0\u53ef\u80fd\u662f\u6570\u636e\u91cf\u6709\u6ce2\u52a8\u3001GC\u3001\u7f51\u7edc\u6296\u52a8\uff0c\u56e0\u4e3a\u4e00\u4e2aCheckpoint\u8fc7\u671f\uff0c\u4e0d\u4f1a\u963b\u585e\u4e0b\u4e00\u4e2aCheckpoint\u7684\u5904\u7406\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e00\u822c\u4f1a\u81ea\u884c\u6062\u590d\u3002
          \n\u82e5\u9891\u7e41Expire\u6216\u8005\u4e00\u76f4Expire\uff0c\u5219\u9700\u8981\u5f15\u8d77\u91cd\u89c6\uff0c\u9700\u8981\u68c0\u67e5\u670d\u52a1\u662f\u5426\u5f02\u5e38\u3001Checkpoint\u662f\u5426\u592a\u9891\u7e41\u3002<\/p>\n
          \u4e3a\u4ec0\u4e48\u8981\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff1f<\/strong>
          \n\u5728TDH7.0\u4e4b\u524d\uff0cCheckpointCoordinator\u4f1a\u6839\u636echeckpoint interval\u5b9a\u671f\u4ea7\u751fcheckpoint\uff0c\u82e5\u4e0d\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u5219\u4f1a\u5bfc\u81f4Server\u7aef\u4fdd\u5b58\u7684Checkpoint\u79ef\u538b\u8fc7\u591a\u3002<\/p>\n
          TDH7.0\u4e4b\u540e\uff0cCheckpointCoordinator\u589e\u52a0\u4e86\u81ea\u9002\u5e94\u529f\u80fd\uff0c\u5f53Checkpoint\u6709\u79ef\u538b\u7684\u65f6\u5019\uff0c\u4f1a\u6682\u505c\u7ee7\u7eed\u751f\u6210checkpoint\uff0c\u76f4\u5230\u524d\u9762\u7684checkpoint\u90fd\u88ab\u6b63\u786e\u5904\u7406\u6216\u8fc7\u671f\u629b\u5f03\uff0c\u4e0d\u4f1a\u957f\u671f\u963b\u585e\u5728\u4e00\u4e2acheckpoint\u91cc\u3002<\/p>\n
          Checkpoint\u8fc7\u671f\u4f1a\u5e26\u6765\u4ec0\u4e48\u5f71\u54cd\uff1f<\/strong>
          \n\u82e5Checkpoint\u88abServer\u8ba4\u4e3a\u8fc7\u671f\uff0c\u5219Sever\u4e0d\u4f1a\u518d\u5904\u7406Task\u53d1\u9001\u7684\u8fdf\u5230\u7684\u5904\u7406\u4fe1\u606f\u3002\u82e5\u6b64\u65f6\u4efb\u52a1\u91cd\u542f\uff0c\u5219\u4ece\u4e0a\u4e00\u4e2acheckpoint\u5f00\u59cb\u6062\u590d\uff1b
          \n\u5f00\u542fCheckpoint\u65f6\uff0cKafka consumer group\u5bf9\u5e94Offset\u7ba1\u7406
          \n\u5f53\u5f00\u542fCheckpoint\u65f6\uff0cOffset\u7531\u5f15\u64ce\u6258\u7ba1\uff0c\u6784\u5efaKafkaConsumer\u65f6\uff0c\u8bbe\u7f6eauto.offset.commit\u4e3afalse\u3002\u82e5\u5f15\u64ce\u4e0d\u63d0\u4ea4offset\u5230Kafka\uff0c\u7528kafka-consumer-groups.sh list \u7ed3\u679c\u627e\u4e0d\u5230\u9700\u8981\u7684consumer group\u3002
          \n\u5e76\u4e14describe group\u65f6\uff0c\u5bf9\u5e94\u7684topic\u4e5f\u4e0d\u4f1a\u663e\u793a\u6709\u5bf9\u5e94client id\u3002
          \n\u56e0\u4e3a\u5f15\u64ce\u5185\u90e8\u4f1a\u5b9a\u671f\u63d0\u4ea4Offset\u5230Kafka\uff0c\u6240\u4ee5\u8fc7\u4e00\u6bb5\u65f6\u95f4describe\u7ed3\u679c\u53ef\u4ee5\u770b\u5230\u5bf9\u5e94\u7684consumer group\u7684offset\u53d8\u5316\uff0c\u4f46\u8fd9\u4e2aoffset\u6d88\u8d39\u60c5\u51b5\u4f1a\u6bd4\u5b9e\u9645\u6d88\u8d39\u7684\u8981\u8fdf\u6ede\u4e0a\u4e00\u6bb5\u65f6\u95f4\u3002
          \n\u5f00\u542fcheckpoint \u673a\u5236\u7684\u60c5\u51b5\u4e0b\uff0c\u662f\u770b\u4e0d\u5230\u5bf9\u5e94\u7684client id\uff0c\u5982\u56fe\uff0c\u5f00\u542f\u524d\u540e\u7684\u6d88\u8d39\u7ec4describe\u7ed3\u679c\u5bf9\u6bd4\uff1a
          \n\"file\"<\/p>\n
          \u6e05\u7406Checkpoint<\/strong>
          \n\u6bcf\u4e2a\u4efb\u52a1\u53ea\u4f1a\u4fdd\u7559\u6700\u8fd1\u76845\u4e2aCheckpoint\uff0c\u66f4\u65e9\u7684Checkpoint\u4f1a\u88ab\u5b9a\u65f6\u6e05\u7406\u4ee5\u4fdd\u8bc1Checkpoint\u6570\u636e\u4e0d\u4f1a\u5360\u7528\u592a\u591a\u7a7a\u95f4\u3002<\/p>\n
          \u5982\u679c\u8981\u5f7b\u5e95\u6e05\u7406\u4e00\u4e2a\u4efb\u52a1\u7684Checkpoint\u6570\u636e\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n
            \n
          1. \n
            \u6267\u884cdrop streamjob job\u540d\uff0c\u4f1a\u5220\u9664Zookeeper\u53caHDFS\u4e0a\u7684Checkpoint\u6587\u4ef6\uff08\u63a8\u8350\uff09<\/p>\n<\/li>\n
          2. \n
            \u624b\u52a8\u5230Zookeeper\u548cHDFS\u8def\u5f84\u4e0b\u5220\u9664\u5bf9\u5e94\u6587\u4ef6\u3002<\/p>\n<\/li>\n<\/ol>\n
            Checkpoint\u6062\u590d\u5f02\u5e38<\/strong>
            \n\u5982\u679c\u5f53\u8ba1\u7b97\u903b\u8f91\u6709\u66f4\u6539\uff0c\u5c24\u5176\u662f\u6d89\u53ca\u6709\u72b6\u6001\u7684\u8ba1\u7b97\uff0c\u6bd4\u5982window\u3001CEP\uff0c\u5219\u539f\u6765\u7684checkpoint\u5219\u4e0d\u518d\u751f\u6548\uff0c\u9700\u8981\u6e05\u9664\u539f\u6765\u7684checkpoint\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
            \u6982\u8981\u63cf\u8ff0 Checkpoint\u673a\u5236\u662f\u7528\u6237\u4fdd\u8bc1Job HA\u7684\u4e00\u4e2a\u624b\u6bb5\uff0cSlipstream\u53ef\u4ee5\u901a\u8fc7\u5b9a\u671f\u89e6\u53d1\u4efb\u52a1\u68c0 ..<\/p>\n
            <\/div>\n
            Read more<\/a><\/p>\n","protected":false},"author":105,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[121],"tags":[],"class_list":["post-10986","post","type-post","status-publish","format-standard","hentry","category-121"],"acf":[],"_links":{"self":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/10986","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/users\/105"}],"replies":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10986"}],"version-history":[{"count":3,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/10986\/revisions"}],"predecessor-version":[{"id":11003,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/10986\/revisions\/11003"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}