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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-17818) Tez & Hive: Memory management should use scaled down Xmx for sizing buffers
Date Fri, 22 Jul 2016 00:51:20 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-17818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15388690#comment-15388690
] 

Hudson commented on AMBARI-17818:
---------------------------------

FAILURE: Integrated in Ambari-trunk-Commit #5358 (See [https://builds.apache.org/job/Ambari-trunk-Commit/5358/])
AMBARI-17818. Tez & Hive: Memory management should use scaled down Xmx (sshridhar: [http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=2516a059a7ca116d218bb6411fccd4ce11ad59ff])
* ambari-server/src/main/resources/stacks/HDP/2.3/services/stack_advisor.py
* ambari-server/src/test/python/stacks/2.3/common/test_stack_advisor.py
* ambari-server/src/test/python/stacks/2.2/common/test_stack_advisor.py
* ambari-server/src/main/resources/stacks/HDP/2.2/services/stack_advisor.py


> Tez & Hive: Memory management should use scaled down Xmx for sizing buffers
> ---------------------------------------------------------------------------
>
>                 Key: AMBARI-17818
>                 URL: https://issues.apache.org/jira/browse/AMBARI-17818
>             Project: Ambari
>          Issue Type: Bug
>          Components: stacks
>            Reporter: Gopal V
>            Assignee: Gopal V
>         Attachments: AMBARI-17818.1.patch, AMBARI-17818.2.patch
>
>
> The defaults in Ambari assume 80% of the YARN container size is allocate to the user
heap (Xmx).
> On top of this particular restriction, the allocation blocks are divided into Eden/Survivor/Tenured
- a single allocation spanning 40% of the heap might fail for tez runtime.io.sort.mb.
> Scale down the Tez sort size and map join by 0.8x to match Xmx.



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