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https://issues.apache.org/jira/browse/AMBARI-7782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14172039#comment-14172039
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John commented on AMBARI-7782:
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A workaround: increase the duration for stop regionserve
> Stop RegionServer may fail during enabling NameNode HA
> ------------------------------------------------------
>
> Key: AMBARI-7782
> URL: https://issues.apache.org/jira/browse/AMBARI-7782
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 1.7.0
> Reporter: John
>
> Ambari will stop and restart all service during the period of enable Namenode
> HA. Sometimes, stop HBase RegionServer may fail which causes the failure of
> "Stop all service" operation. At this moment, one or more retries can
> overcome this problem.
> The possible root cause of this issue may be that: command
> "/usr/lib/hbase/bin/hbase-daemon.sh --config /etc/hbase/conf stop
> regionserver" consumes 30 + epsilon seconds; timeout handler is triggered
> since deadline is missed; begin to force kill process (this operation fails
> because its start time is after 30 + epsilon at which HBase RegionServer is
> offline).
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