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https://issues.apache.org/jira/browse/AMBARI-15677?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vitaly Brodetskyi updated AMBARI-15677:
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Resolution: Fixed
Status: Resolved (was: Patch Available)
Committed to trunk and branch-2.2
> Ambari needs to set HDFS GC settings correctly
> ----------------------------------------------
>
> Key: AMBARI-15677
> URL: https://issues.apache.org/jira/browse/AMBARI-15677
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.2.2
> Reporter: Vitaly Brodetskyi
> Assignee: Vitaly Brodetskyi
> Priority: Critical
> Fix For: 2.2.2
>
> Attachments: AMBARI-15677.patch
>
>
> We need to make sure the Namenode CMS GC settings are correct.
> Ambari does not currently set -XX:CMSInitiatingOccupancyFraction=70 or
> -XX:+UseCMSInitiatingOccupancyOnly. The NewSize needs also some tweaking: it
> should be 1/8th to 1/10th of the namenode heap size in general, but it looks
> like we would cap at 8 gb like here (this NN has 112 GB heap).
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