[jira] [Commented] (FLINK-14110) Deleting state.backend.rocksdb.localdir causes silent failure

["Yu Li (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-14110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16980009#comment-16980009 ] 

Yu Li commented on FLINK-14110:
-------------------------------

[~aaronlevin] Do you find time checking the details following [~klion26]'s suggestion? If so, any findings?

[~klion26] Could you also try the steps as posted in JIRA description and see whether it could reproduce?

Thanks.

> Deleting state.backend.rocksdb.localdir causes silent failure
> -------------------------------------------------------------
>
>                 Key: FLINK-14110
>                 URL: https://issues.apache.org/jira/browse/FLINK-14110
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / State Backends
>    Affects Versions: 1.8.1, 1.9.0
>         Environment: Flink {{1.8.1}} and {{1.9.0}}.
> JVM 8
>            Reporter: Aaron Levin
>            Priority: Minor
>
> Suppose {{state.backend.rocksdb.localdir}} is configured as:
> {noformat}
> state.backend.rocksdb.localdir: /flink/tmp
> {noformat}
> If I then run \{{rm -rf /flink/tmp/job_*}} on a host while a Flink application is running, I will observe the following:
>  * throughput of my operators running on that host will drop to zero
>  * the application will not fail or restart
>  * the task manager will not fail or restart
>  * in most cases there is nothing in the logs to indicate a failure (I've run this several times and only once seen an exception - I believe I was lucky and deleted those directories during a checkpoint or something)
> The desired behaviour here would be to throw an exception and crash, instead of silently dropping throughput to zero. Restarting the Task Manager will resolve the issues.
> I only tried this on Flink {{1.8.1}} and {{1.9.0}}.



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