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From "Srimanth Gunturi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-12280) HiveServer2 upgrade/downgrade should deregister old server after new one is started
Date Sun, 05 Jul 2015 02:11:04 GMT
Srimanth Gunturi created AMBARI-12280:
-----------------------------------------

             Summary: HiveServer2 upgrade/downgrade should deregister old server after new
one is started
                 Key: AMBARI-12280
                 URL: https://issues.apache.org/jira/browse/AMBARI-12280
             Project: Ambari
          Issue Type: Bug
          Components: ambari-server
    Affects Versions: 2.1.0
            Reporter: Srimanth Gunturi
            Assignee: Srimanth Gunturi
            Priority: Critical
             Fix For: 2.1.0


During upgrade/downgrade, the deregister is happening before the new HS2 is started. This
can lead to a case where there is no HS2 up and running. The order needs to be fixed, to first
start target version of HS2 and then do the deregister.
1. Switch hive-server2 to the new software version, start the new process, and deregister
the old version of hive-server2:

Since the current version would have changed before hive version is obtained for deregister
command, the version should be obtained using the HDP versioned path.
/usr/hdp/$HDP_VERSION/hive/bin/hive --version 
It will be safer to use the full path to hive for this, instead of relying on the $PATH variable
setting.




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