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https://issues.apache.org/jira/browse/FLINK-11107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tzu-Li (Gordon) Tai resolved FLINK-11107.
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Resolution: Fixed
> 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: Blocker
> Labels: pull-request-available
> Fix For: 1.9.0, 1.8.1
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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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