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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/05/21 19:41:19 UTC

[jira] [Assigned] (SPARK-7795) Speed up task serialization in standalone mode

     [ https://issues.apache.org/jira/browse/SPARK-7795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-7795:
-----------------------------------

    Assignee: Apache Spark

> Speed up task serialization in standalone mode
> ----------------------------------------------
>
>                 Key: SPARK-7795
>                 URL: https://issues.apache.org/jira/browse/SPARK-7795
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 1.3.1
>            Reporter: Akshat Aranya
>            Assignee: Apache Spark
>
> My experiments with scheduling very short tasks in standalone cluster mode indicated that a significant amount of time was being spent in scheduling the tasks (>500ms for 256 tasks). I found that most of the time was being spent in creating a new instance of serializer for each task. Changing this to just one serializer brought down the scheduling time to 8ms.



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