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https://issues.apache.org/jira/browse/AMBARI-4999?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Srimanth Gunturi resolved AMBARI-4999.
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Resolution: Fixed
+1 received. Committed to trunk.
> Ambari should allow at least 3 yarn containers on a one-node installation
> -------------------------------------------------------------------------
>
> Key: AMBARI-4999
> URL: https://issues.apache.org/jira/browse/AMBARI-4999
> Project: Ambari
> Issue Type: Task
> Components: client
> Affects Versions: 1.5.0
> Reporter: Srimanth Gunturi
> Assignee: Srimanth Gunturi
> Fix For: 1.5.0
>
> Attachments: AMBARI-4999.patch
>
>
> Ambari UI calculates ram-per-container as a fraction.
> YARN scheduler's minimum memory is Math.round(ram-per-container), while the
> maximum memory is Math.round(number-of-containers * ram-percontainer).
> The problem is that for some fractional values, 3*Math.round(fraction) >
> Math.round(3*fraction). (Ex: Take value 1.7). Because of that less number of
> containers can actually be started, as the value slightly goes over the
> maximum.
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