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https://issues.apache.org/jira/browse/FLINK-2221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14586149#comment-14586149
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Márton Balassi commented on FLINK-2221:
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After a bit more careful consideration and checking other parts of the code I
feel that it does not make sense to implement this. A clash in twenty byte long
random string has to be enough.
> Checkpoints to "file://" are not cleaned up
> -------------------------------------------
>
> Key: FLINK-2221
> URL: https://issues.apache.org/jira/browse/FLINK-2221
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Aljoscha Krettek
>
> If you think about it, this could never work. The state handle cleanup logic
> happens purely on the JobManager. So what happens is that the TaskManagers
> create state in some directory, let's say /tmp/checkpoints, on the
> TaskManager. For cleanup, the JobManager gets the state handle and calls
> discard (on the JobManager), this tries to cleanup the state in
> /tmp/checkpoints, but of course, there is nothing there since we are still on
> the JobManager.
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