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https://issues.apache.org/jira/browse/AMBARI-17818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15387667#comment-15387667
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Hadoop QA commented on AMBARI-17818:
------------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12819265/AMBARI-17818.2.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 2 new
or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in
ambari-server.
Test results:
https://builds.apache.org/job/Ambari-trunk-test-patch/7953//testReport/
Console output:
https://builds.apache.org/job/Ambari-trunk-test-patch/7953//console
This message is automatically generated.
> 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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