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Posted to issues@spark.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2015/10/01 20:09:27 UTC

[jira] [Updated] (SPARK-10787) Consider replacing ObjectOutputStream for serialization to prevent OOME

     [ https://issues.apache.org/jira/browse/SPARK-10787?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ted Yu updated SPARK-10787:
---------------------------
    Summary: Consider replacing ObjectOutputStream for serialization to prevent OOME  (was: Reset ObjectOutputStream more often to prevent OOME)

> Consider replacing ObjectOutputStream for serialization to prevent OOME
> -----------------------------------------------------------------------
>
>                 Key: SPARK-10787
>                 URL: https://issues.apache.org/jira/browse/SPARK-10787
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>            Reporter: Ted Yu
>            Priority: Minor
>
> In the thread, Spark ClosureCleaner or java serializer OOM when trying to grow (http://search-hadoop.com/m/q3RTtAr5X543dNn), Jay Luan reported that ClosureCleaner#ensureSerializable() resulted in OOME.
> The cause was that ObjectOutputStream keeps a strong reference of every object that was written to it.
> This issue tries to avoid OOME by calling reset() more often.



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