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Posted to issues@spark.apache.org by "Kay Ousterhout (JIRA)" <ji...@apache.org> on 2014/11/06 08:46:33 UTC

[jira] [Closed] (SPARK-1141) Parallelize Task Serialization

     [ https://issues.apache.org/jira/browse/SPARK-1141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kay Ousterhout closed SPARK-1141.
---------------------------------
    Resolution: Won't Fix

Because Spark now broadcasts the task binary, task serialization is no longer a bottleneck in the scheduler, and implementing this feature adds significant scheduler complexity.

> Parallelize Task Serialization
> ------------------------------
>
>                 Key: SPARK-1141
>                 URL: https://issues.apache.org/jira/browse/SPARK-1141
>             Project: Spark
>          Issue Type: Improvement
>            Reporter: Kay Ousterhout
>            Assignee: OuyangJin
>
> When task closures are large, task serialization becomes the bottleneck in scheduling.  We should parallelize task serialization to alleviate this problem.



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