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From "Jonathan Hurley (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-18591) Hive Rolling Upgrade Is No Longer Supported In Ambari
Date Thu, 13 Oct 2016 17:11:21 GMT
Jonathan Hurley created AMBARI-18591:
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             Summary: Hive Rolling Upgrade Is No Longer Supported In Ambari
                 Key: AMBARI-18591
                 URL: https://issues.apache.org/jira/browse/AMBARI-18591
             Project: Ambari
          Issue Type: Task
          Components: ambari-server
    Affects Versions: 2.5.0
            Reporter: Jonathan Hurley
            Assignee: Jonathan Hurley
            Priority: Critical
             Fix For: 2.5.0


HS2 RU expects all users to be using zookeeper based JDBC URLs. However, few users are using
these new Zookeeper discovery urls and they use the old format, directly specifying the hostname
and port number for the HS2 instance it connects to. During RU, the HS2 port number changes
and users using old url have an outage.  Hive needs to be able to support RU without changing
the port.

Due to too many Hive Client user outages as a result of the RU workflow for HIve, the decision
is to just change RU to bounce the HS2 process, knowing that there will be down time and causing
all active queries to fail.  So the runbook for the HS2 process will look like:

* We will no longer change the Hive port at all during either RU or EU.
* During an RU, we will present a message if Hive is present that indicates that Hive is not
rolling and it will be taken down.
* Run the Hive deregister command to remove the ZK entries for the Hive Servers
* Hive will be shutdown, without draining, during an RU and a new instance started up on the
same port.

In addition, we need to remove the warnings that were added as part of AMBARI-17319.




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