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From "Samir Ahmic (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-15486) Avoid multiple disable/enable balancer calls while running rolling-restart.sh --graceful
Date Fri, 18 Mar 2016 12:54:33 GMT
Samir Ahmic created HBASE-15486:
-----------------------------------

             Summary: Avoid multiple disable/enable balancer calls while running rolling-restart.sh
--graceful 
                 Key: HBASE-15486
                 URL: https://issues.apache.org/jira/browse/HBASE-15486
             Project: HBase
          Issue Type: Improvement
          Components: scripts
    Affects Versions: 2.0.0, 1.1.4, 1.0.4
            Reporter: Samir Ahmic
            Assignee: Samir Ahmic
            Priority: Minor


When running rolling-restart.sh --graceful we are using graceful_stop.sh to unload/restart/load
regionserver. For every restarted  regionserver  we are making two calls in graceful-stop.sh
to hbase shell to disable/enable balancer. This means if we have 100 regionservers to restart
by rolling-restart.sh --graceful we will make 200 calls to hbase shell. Instead i propose
that we add optional parameter in graceful_stop.sh that will tell script not to manage balancer
and manage balancer states in rolling-restart.sh when running with --graceful parameter. 



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