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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-11472) Namenode Advanced settings - Documentation Improvement - NameNode new generation size
Date Thu, 28 May 2015 21:21:19 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-11472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14563712#comment-14563712
] 

Hudson commented on AMBARI-11472:
---------------------------------

FAILURE: Integrated in Ambari-trunk-Commit #2739 (See [https://builds.apache.org/job/Ambari-trunk-Commit/2739/])
AMBARI-11472. Namenode Advanced settings - Documentation Improvement - NameNode new generation
size (Richard Zang via srimanth) (sgunturi: http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=d4ec03f345f44ebe01285c7a8cab5188d3048c4c)
* ambari-server/src/test/resources/stacks/HDP/2.0.5/services/HDFS/configuration/global.xml
* ambari-server/src/test/resources/stacks/HDP/2.0.1/services/HDFS/configuration/global.xml
* ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/configuration/hadoop-env.xml
* ambari-server/src/test/resources/stacks/HDP/2.0.7/services/HDFS/configuration/global.xml
* ambari-server/src/test/resources/stacks/HDP/1.3.0/services/HDFS/configuration/global.xml
* ambari-server/src/test/resources/stacks/HDP/0.2/services/HDFS/configuration/global.xml
* ambari-server/src/test/resources/stacks/HDP/0.2/services/HDFS/configuration/hadoop-env.xml
* ambari-server/src/test/resources/stacks_with_common_services/HDP/0.2/services/HDFS/configuration/hadoop-env.xml
* ambari-server/src/test/resources/stacks_with_common_services/HDP/0.2/services/HDFS/configuration/global.xml


> Namenode Advanced settings - Documentation Improvement - NameNode new generation size
> -------------------------------------------------------------------------------------
>
>                 Key: AMBARI-11472
>                 URL: https://issues.apache.org/jira/browse/AMBARI-11472
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-web
>    Affects Versions: 2.1.0
>            Reporter: Richard Zang
>            Assignee: Richard Zang
>             Fix For: 2.1.0
>
>         Attachments: AMBARI-11472.patch
>
>
> On the Ambari help page on internet we document 
> NameNode new generation size	
> ||Heading 1||Heading 2||
> |NameNode new generation size|Default size of Java new generation for NameNode (Java
option -XX:NewSize) Note: The value of NameNode new generation size (default size of Java
new generation for NameNode (Java option -XX:NewSize)) should be 1/8 of maximum heap size
(-Xmx). Ensure that the value of the namenode_opt_newsize property is 1/8 the value of maximum
heap size (-Xmx).|
> However when we show the help tool tip for this setting we don't show this info at all.
This info is very helpful to setup right values. Please show that recommendation is 1/8 of
heap memory



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