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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-10815) Master regionserver should be rolling-upgradable
Date Mon, 24 Mar 2014 16:44:45 GMT
Jimmy Xiang created HBASE-10815:
-----------------------------------

             Summary: Master regionserver should be rolling-upgradable
                 Key: HBASE-10815
                 URL: https://issues.apache.org/jira/browse/HBASE-10815
             Project: HBase
          Issue Type: Sub-task
            Reporter: Jimmy Xiang
            Assignee: Jimmy Xiang


In HBASE-10569, two things could affect the rolling-upgrade from a 0.96+ release:

* Master doesn't have its own info server any. It shares the same info server with the regionserver.
We can have a setting so that we can start two info servers, one for the master on the original
port, and one for the regionserver.

* Backup master is a regionserver now. So it could hold regions. This could affect some deployment.
We can have a setting so that we can prevent backup master from serving any region.




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