[
https://issues.apache.org/jira/browse/FLINK-25695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17478471#comment-17478471
]
Wenlong Lyu commented on FLINK-25695:
-------------------------------------
According to the description in FLINK-21833, I think the root cause may be the
event time timer registered not cleaned when retention happened. the right way
to fix maybe remove the event timer when cleaning up the all of the state.
> TemporalJoin cause state leak in some cases
> -------------------------------------------
>
> 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
> Labels: pull-request-available
>
> Last year, I reported the similar bug of TemporalJoin cause state leak.
> Detail: FLINK-21833
> Recently, I found the fix code can reduce the the leak size but can not
> resolve it completely.
> The code of line 213 cause it and the right fix is to invoke cleanUp() method.
> In FLINK-21833, we discussed when the code is running on line 213, that means
> 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.
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
