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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-10350) Ambari UI for HBase config incorrectly describes the -Xmn config
Date Fri, 03 Apr 2015 16:13:53 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-10350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14394634#comment-14394634
] 

Hadoop QA commented on AMBARI-10350:
------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12709247/AMBARI-10350.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 3 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:red}-1 core tests{color}.  The test build failed in ambari-server 

Test results: https://builds.apache.org/job/Ambari-trunk-test-patch/2239//testReport/
Console output: https://builds.apache.org/job/Ambari-trunk-test-patch/2239//console

This message is automatically generated.

> Ambari UI for HBase config incorrectly describes the -Xmn config
> ----------------------------------------------------------------
>
>                 Key: AMBARI-10350
>                 URL: https://issues.apache.org/jira/browse/AMBARI-10350
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>            Reporter: Dmitry Lysnichenko
>            Assignee: Dmitry Lysnichenko
>             Fix For: 2.1.0
>
>         Attachments: AMBARI-10350.patch
>
>
> Ambari GUI for HBase config incorrectly describes the -Xmn as the “maximum value for
the minimum heap size”, which is incorrect. Xmn is the size of the heap for the young generation.
> If somebody new to Java just reads the Ambari description and set both Xmn and Xmx to
the same value, HBase will start but it will perform miserably. Please fix the documentation
for the two settings in Ambari GUI that refer to Xmx (the ratio and the static value)



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