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https://issues.apache.org/jira/browse/HBASE-6437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13419852#comment-13419852
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Zhihong Ted Yu commented on HBASE-6437:
---------------------------------------

Balancer is started in finishInitialization() toward the end of initialization:
{code}
      status.setStatus("Starting balancer and catalog janitor");
      this.balancerChore = getAndStartBalancerChore(this);
      this.catalogJanitorChore = new CatalogJanitor(this, this);
      startCatalogJanitorChore();
     
      registerMBean();
    }

    status.markComplete("Initialization successful");
{code}
                
> Avoid admin.balance during master initialize
> --------------------------------------------
>
>                 Key: HBASE-6437
>                 URL: https://issues.apache.org/jira/browse/HBASE-6437
>             Project: HBase
>          Issue Type: Bug
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.92.2, 0.96.0, 0.94.2
>
>
> In HBASE-5850 many of the admin operations have been blocked till the master 
> initializes.  But the balancer is not.  So this JIRA is to extend the 
> PleaseHoldException in case of admin.balance() call before master is 
> initialized.

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