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Posted to issues@tez.apache.org by "Bikas Saha (JIRA)" <ji...@apache.org> on 2015/03/03 08:18:04 UTC

[jira] [Updated] (TEZ-776) Reduce AM mem usage caused by storing TezEvents

     [ https://issues.apache.org/jira/browse/TEZ-776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bikas Saha updated TEZ-776:
---------------------------
    Attachment: TEZ-776.ondemand.2.patch

> Reduce AM mem usage caused by storing TezEvents
> -----------------------------------------------
>
>                 Key: TEZ-776
>                 URL: https://issues.apache.org/jira/browse/TEZ-776
>             Project: Apache Tez
>          Issue Type: Sub-task
>            Reporter: Siddharth Seth
>            Assignee: Bikas Saha
>         Attachments: TEZ-776.ondemand.1.patch, TEZ-776.ondemand.2.patch, TEZ-776.ondemand.patch, events-problem-solutions.txt
>
>
> This is open ended at the moment.
> A fair chunk of the AM heap is taken up by TezEvents (specifically DataMovementEvents - 64 bytes per event).
> Depending on the connection pattern - this puts limits on the number of tasks that can be processed.



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