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https://issues.apache.org/jira/browse/AMBARI-11472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14563370#comment-14563370
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Srimanth Gunturi commented on AMBARI-11472:
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+1 for patch
> 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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