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From "Jeffrey Zhong (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-9932) Remove Master Recovery handling when ZK session expired
Date Sat, 09 Nov 2013 02:18:17 GMT
Jeffrey Zhong created HBASE-9932:
------------------------------------

             Summary: Remove Master Recovery handling when ZK session expired
                 Key: HBASE-9932
                 URL: https://issues.apache.org/jira/browse/HBASE-9932
             Project: HBase
          Issue Type: Brainstorming
            Reporter: Jeffrey Zhong


Currently we use HMaster#tryRecoveringExpiredZKSession to allow master recovery from a ZK
session expired error. While this triggers to initialize HMaster partially, it is error prone
because it's hard to guarantee the half initialized master is in correct state. I found several
times already that the registered ZK listeners are different before & after a fail over.

Since we already have HA support, I'm proposing to remove this part handling. Though we have
a configuration setting "fail.fast.expired.active.master" to skip the logic, why not go one
stop further to clean the master code. 



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