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https://issues.apache.org/jira/browse/KAFKA-20878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Nikita Shupletsov reassigned KAFKA-20878:
-----------------------------------------
Assignee: Nikita Shupletsov
> UnsupportedOperationException: This task is read-only during unclean shutdown
> -----------------------------------------------------------------------------
>
> Key: KAFKA-20878
> URL: https://issues.apache.org/jira/browse/KAFKA-20878
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 4.0.2
> Reporter: Nikita Shupletsov
> Assignee: Nikita Shupletsov
> Priority: Major
>
> Under certain circumstances:
> [https://github.com/apache/kafka/blob/trunk/streams/src/main/java/org/apache/kafka/streams/processor/internals/TaskManager.java#L1522]
> will return a non-empty list, which will cause this exception:
>
> {{{}{}}}{{{}java.lang.UnsupportedOperationException: This task is
> read-only{}}}
> {{ at
> org.apache.kafka.streams.processor.internals.ReadOnlyTask.closeDirty(ReadOnlyTask.java:103)}}
> {{ at
> org.apache.kafka.streams.processor.internals.TaskManager.closeTaskDirty(TaskManager.java:1422)}}
> {{ at
> org.apache.kafka.streams.processor.internals.TaskManager.shutdownStateUpdater(TaskManager.java:1523)}}
> {{ at
> org.apache.kafka.streams.processor.internals.TaskManager.shutdown(TaskManager.java:1441)}}
> {{ at
> org.apache.kafka.streams.processor.internals.StreamThread.completeShutdown(StreamThread.java:1940)}}
> {{ at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:962)}}
>
> as {{stateUpdater.tasks()}} returns a list of {{ReadOnlyTask}}
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