Zhihong Yu commented on HBASE-5677:

The new method has traces of the existing method:
+  public boolean isMasterAvailable()
+  throws MasterNotRunningException, ZooKeeperConnectionException {
We should wait for other reviewers' comment about proper naming.

As always, please provide patch for trunk, 0.94 and 0.92.
Attaching patch for trunk would allow Hadoop QA to run.
> The master never does balance because duplicate openhandled the one region
> --------------------------------------------------------------------------
>                 Key: HBASE-5677
>                 URL: https://issues.apache.org/jira/browse/HBASE-5677
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.6
>         Environment: 0.90
>            Reporter: xufeng
>            Assignee: xufeng
>         Attachments: HBASE-5677-90-v1.patch, 
> surefire-report_no_patched_v1.html, surefire-report_patched_v1.html
> If region be assigned When the master is doing initialization(before do 
> processFailover),the region will be duplicate openhandled.
> because the unassigned node in zookeeper will be handled again in 
> AssignmentManager#processFailover()
> it cause the region in RIT,thus the master never does balance.

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