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From "Kurt Young (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-11107) [state] Avoid memory stateBackend to create arbitrary folders under HA path when no checkpoint path configured
Date Fri, 12 Apr 2019 07:28:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-11107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16816041#comment-16816041
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Kurt Young commented on FLINK-11107:
------------------------------------

Got it, thanks [~yunta], i think this should be fixed in 1.9.0

> [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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