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https://issues.apache.org/jira/browse/FLINK-11107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16815949#comment-16815949
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Yun Tang commented on FLINK-11107:
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[~ykt836] This is the issue which would created a lot of useless folders under
HA folder and lead to no new jobs could not be launched if the HA folder meet
the limitation exception.
> [state] Avoid memory stateBackend to create arbitrary folders under HA path
> when no checkpoint path configured
> --------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-11107
> URL: https://issues.apache.org/jira/browse/FLINK-11107
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Affects Versions: 1.6.2, 1.7.0
> Reporter: Yun Tang
> Assignee: Yun Tang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.7.3, 1.6.5
>
>
> Currently, memory state-backend would create a folder named with random UUID
> under HA directory if no checkpoint path ever configured. (the code logic
> locates within {{StateBackendLoader#fromApplicationOrConfigOrDefault}})
> However, the default memory state-backend would not only be created on JM
> side, but also on each task manager's side, which means many folders with
> random UUID would be created under HA directory. It would result in exception
> like:
> {noformat}
> The directory item limit of /tmp/flink/ha is exceeded: limit=1048576
> items=1048576{noformat}
> If this happens, no new jobs could be submitted only if we clean up those
> directories manually.
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