[
https://issues.apache.org/jira/browse/KAFKA-9540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17038868#comment-17038868
]
Bruno Cadonna commented on KAFKA-9540:
--------------------------------------
[~ableegoldman] [~guozhang] Can we close this ticket?
> Application getting "Could not find the standby task 0_4 while closing it"
> error
> --------------------------------------------------------------------------------
>
> Key: KAFKA-9540
> URL: https://issues.apache.org/jira/browse/KAFKA-9540
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 2.4.0, 2.5.0
> Reporter: Badai Aqrandista
> Priority: Minor
> Fix For: 2.4.1
>
>
> Because of this the following line, there is a possibility that some standby
> tasks might not be created:
> https://github.com/apache/kafka/blob/2.4.0/streams/src/main/java/org/apache/kafka/streams/processor/internals/StreamThread.java#L436
> Then causing this line to not adding the task to standby task list:
> https://github.com/apache/kafka/blob/2.4.0/streams/src/main/java/org/apache/kafka/streams/processor/internals/StreamThread.java#L299
> But this line assumes that all standby tasks are to be created and add it to
> the standby list:
> https://github.com/apache/kafka/blob/2.4.0/streams/src/main/java/org/apache/kafka/streams/processor/internals/TaskManager.java#L168
> This results in user getting this error message on the next
> PARTITION_ASSIGNMENT state:
> {noformat}
> Could not find the standby task 0_4 while closing it
> (org.apache.kafka.streams.processor.internals.AssignedStandbyTasks:74)
> {noformat}
> But the harm caused by this issue is minimal: No standby task for some
> partitions. And it is recreated on the next rebalance anyway. So, I suggest
> lowering this message to WARN. Or probably check to WARN when standby task
> could not be created.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
