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https://issues.apache.org/jira/browse/FLINK-4131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ufuk Celebi closed FLINK-4131.
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Resolution: Duplicate
> Confusing error for out dated RequestPartitionState
> ---------------------------------------------------
>
> Key: FLINK-4131
> URL: https://issues.apache.org/jira/browse/FLINK-4131
> Project: Flink
> Issue Type: Improvement
> Reporter: Ufuk Celebi
> Assignee: Ufuk Celebi
>
> When a consumer requests a partition state for an old job or execution
> attempt (e.g. failed job or attempt), the JobManager answers with a {{null}}
> state, which fails the requesting task with the following cause:
> {{IllegalStateException("Received unexpected partition state null for
> partition request. This is a bug.")}}.
> This is confusing to the user as one might think that this is the root
> failure cause.
> I propose to either ignore the null state at the Task or not respond on the
> JobManager side if the job or execution attempt has been cleared (see
> {{RequestPartitionState}} in {{JobManager.scala}}).
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