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Posted to commits@samza.apache.org by "Prateek Maheshwari (JIRA)" <ji...@apache.org> on 2019/03/19 17:02:00 UTC
[jira] [Resolved] (SAMZA-2073) Do not commit the task offsets when
shutting down the SamzaContainer.
[ https://issues.apache.org/jira/browse/SAMZA-2073?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Prateek Maheshwari resolved SAMZA-2073.
---------------------------------------
Resolution: Fixed
> Do not commit the task offsets when shutting down the SamzaContainer.
> ---------------------------------------------------------------------
>
> Key: SAMZA-2073
> URL: https://issues.apache.org/jira/browse/SAMZA-2073
> Project: Samza
> Issue Type: Improvement
> Reporter: Shanthoosh Venkataraman
> Assignee: Shanthoosh Venkataraman
> Priority: Major
>
> SAMZA-1489 added support for committing the offsets of all the running tasks when shutting down a SamzaContainer. Other components in samza such as a CheckpointListener's aren't developed to account for possibility of commit after the consumers are stopped.
> This unnecessarily results in a unclean shutdown of a samza standalone processor during the rebalancing phase. Here're the sample logs:
> {noformat}
> apache.samza.container.SamzaContainer@129d533c to shutdown.
> 2019/01/15 02:38:09.738 INFO [SamzaContainer] [Samza StreamProcessor Container Thread-0] [hello-brooklin-task] [] Shutting down SamzaContainer.
> 2019/01/15 02:38:09.738 INFO [SamzaContainer] [Samza StreamProcessor Container Thread-0] [hello-brooklin-task] [] Shutting down consumer multiplexer.
> 2019/01/15 02:38:09.741 INFO [KafkaProducer] [hello-brooklin-task-i001-auditor] [hello-brooklin-task] [] [Producer clientId=hello-brooklin-task-i001-auditor, transactionalId=nullClosing the Kafka producer with timeoutMillis = 9223370489334886066 ms.
> 2019/01/15 02:38:09.748 INFO [SamzaContainer] [Samza StreamProcessor Container Thread-0] [hello-brooklin-task] [] Shutting down task instance stream tasks.
> 2019/01/15 02:38:09.748 INFO [SamzaContainer] [Samza StreamProcessor Container Thread-0] [hello-brooklin-task] [] Shutting down timer executor
> 2019/01/15 02:38:09.749 INFO [SamzaContainer] [Samza StreamProcessor Container Thread-0] [hello-brooklin-task] [] Committing offsets for all task instances
> 2019/01/15 02:38:09.753 ERROR [SamzaContainer] [Samza StreamProcessor Container Thread-0] [hello-brooklin-task] [] Caught exception/error while shutting down container.
> java.lang.IllegalStateException: This consumer has already been closed.
> at org.apache.kafka.clients.consumer.KafkaConsumer.acquireAndEnsureOpen(KafkaConsumer.java:1735)
> at org.apache.kafka.clients.consumer.KafkaConsumer.commitSync(KafkaConsumer.java:1214)
> at com.linkedin.kafka.liclients.consumer.LiKafkaConsumerImpl.commitOffsets(LiKafkaConsumerImpl.java:311)
> at com.linkedin.kafka.liclients.consumer.LiKafkaConsumerImpl.commitSync(LiKafkaConsumerImpl.java:282)
> at com.linkedin.brooklin.client.BaseConsumerImpl.commit(BaseConsumerImpl.java:136)
> {noformat}
>
>
> Since the final commit is not critical, it will be better to not do it as a part of the SamzaContainer shutdown sequence.
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