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https://issues.apache.org/jira/browse/AMBARI-13643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aravindan Vijayan resolved AMBARI-13643.
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Resolution: Fixed
> Warn if Xmn size is oversubscribed in AMS HBase master and region server
> config
> -------------------------------------------------------------------------------
>
> Key: AMBARI-13643
> URL: https://issues.apache.org/jira/browse/AMBARI-13643
> Project: Ambari
> Issue Type: Bug
> Components: ambari-metrics
> Affects Versions: 2.1.2
> Reporter: Aravindan Vijayan
> Assignee: Aravindan Vijayan
> Priority: Critical
>
> Problem/Bug
> While setting the AMS configuration, the user can set any unbounded value for
> the Xmn settings. This might lead to undesirable outcomes from the JVM.
> Fix
> Provide validation of Xmn settings based on AMS mode.
> If AMS is operating in embedded mode
> regionserver_xmn ---- 12-20% of ( hbase_master_heapsize +
> hbase_regionserver_heapsize)
> If AMS is operating in distributed distributed mode
> hbase_master_xmn ---- 12 - 20% of hbase_master_heapsize
> regionserver_xmn ---- 12 - 20% of hbase_regionserver_heapsize
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