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Posted to issues@spark.apache.org by "Josh Rosen (JIRA)" <ji...@apache.org> on 2014/12/10 08:53:12 UTC
[jira] [Assigned] (SPARK-4772) Accumulators leak memory, both
temporarily and permanently
[ https://issues.apache.org/jira/browse/SPARK-4772?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Josh Rosen reassigned SPARK-4772:
---------------------------------
Assignee: Josh Rosen
> 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: Josh Rosen
> Labels: accumulators
> 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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