[jira] [Resolved] (SPARK-4772) Accumulators leak memory, both temporarily and permanently

["Josh Rosen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-4772?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Josh Rosen resolved SPARK-4772.
-------------------------------
       Resolution: Fixed
    Fix Version/s: 1.2.1

> Accumulators leak memory, both temporarily and permanently
> ----------------------------------------------------------
>
>                 Key: SPARK-4772
>                 URL: https://issues.apache.org/jira/browse/SPARK-4772
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 1.0.0
>            Reporter: Nathan Kronenfeld
>            Assignee: Nathan Kronenfeld
>              Labels: accumulators
>             Fix For: 1.0.3, 1.3.0, 1.1.2, 1.2.1
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> Accumulators.localAccums is cleared at the beginning of a task, and not at the end.
> This means that any locally accumulated values hang around until another task is run on that thread.
> If for some reason, the thread dies, said values hang around indefinitely.
> This is really only a big issue with very large accumulators.



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