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https://issues.apache.org/jira/browse/AMBARI-11870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14584072#comment-14584072
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Hudson commented on AMBARI-11870:
---------------------------------
SUCCESS: Integrated in Ambari-trunk-Commit #2902 (See
[https://builds.apache.org/job/Ambari-trunk-Commit/2902/])
AMBARI-11870. HDP-2.3 'hive.tez.java.opts' should not contain Xmx and add
additional JDK1.8 params (srimanth) (sgunturi:
http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=1a5658b4b2f63f1088ddb9c121f25aea94b7f850)
* ambari-server/src/main/resources/stacks/HDP/2.0.6/services/stack_advisor.py
* ambari-server/src/test/python/stacks/2.3/common/test_stack_advisor.py
* ambari-server/src/main/resources/stacks/HDP/2.3/services/stack_advisor.py
> HDP-2.3 'hive.tez.java.opts' should not contain Xmx and add additional JDK1.8
> params
> ------------------------------------------------------------------------------------
>
> Key: AMBARI-11870
> URL: https://issues.apache.org/jira/browse/AMBARI-11870
> Project: Ambari
> Issue Type: Bug
> Components: contrib
> Affects Versions: 2.1.0
> Reporter: Srimanth Gunturi
> Assignee: Srimanth Gunturi
> Fix For: 2.1.0
>
> Attachments: AMBARI-11870.patch, AMBARI-11870_2.patch
>
>
> {{hive.tez.java.opts}} for HDP-2.3 should not contain the Xmx JVM parameter.
> The reason for this is:
> {noformat}
> Tez does it based on the allocated container (i.e if you use a 1.5Gig
> container.size and YARN returns a 4Gig one, Tez should use a 0.8*4096).
> https://github.com/apache/tez/blob/master/tez-api/src/main/java/org/apache/tez/client/TezClientUtils.java#L920
> This would work much better if you removed the whole Xmx parameter from the
> config in hive-site.xml.
> {noformat}
> Also, for JDK8 the preferred GC isn't {{-XX:+UseParallelGC}} it is
> {{-XX:+UseG1GC -XX:+ResizeTLAB}} while retaining all the other java
> parameters. In some JDK7 versions, the G1GC occasionally segfaults, so the
> choice of those two are based on whether the install is on JDK8 or not.
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