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https://issues.apache.org/jira/browse/FLINK-25695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17478314#comment-17478314
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Lyn Zhang commented on FLINK-25695:
-----------------------------------
PR: https://github.com/apache/flink/pull/18398
> TemporalJoin cause state leak in some case
> ------------------------------------------
>
> Key: FLINK-25695
> URL: https://issues.apache.org/jira/browse/FLINK-25695
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Runtime
> Affects Versions: 1.14.3
> Reporter: Lyn Zhang
> Priority: Major
>
> Last year, I report the similar bug of TemporalJoin cause state leak.
> Detail: [https://github.com/apache/flink/pull/14916]
> Recently, I found the fix code can reduce the the leak size but can not
> resolve it completely.
> The code of line 213 cause that and The right fix is to invoke cleanUp()
> method.
> The [https://github.com/apache/flink/pull/14916] We discussed that if the
> code is running on line 213, That meaning Left State, Right State,
> registeredTimerState is empty, actually the Left State and Right State
> value(MapState) is empty but the key is still be in state, So invoke
> state.clear() is necessary.
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