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From "John (JIRA)" <>
Subject [jira] [Commented] (AMBARI-7782) Stop RegionServer may fail during enabling NameNode HA
Date Wed, 15 Oct 2014 05:58:33 GMT


John commented on AMBARI-7782:

A workaround: increase the duration for stop regionserve

> Stop RegionServer may fail during enabling NameNode HA
> ------------------------------------------------------
>                 Key: AMBARI-7782
>                 URL:
>             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/
--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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