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https://issues.apache.org/jira/browse/AMBARI-11288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14553446#comment-14553446
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Hadoop QA commented on AMBARI-11288:
------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12734259/AMBARI-11288.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author 
tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new 
or modified test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the 
total number of javac compiler warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase 
the total number of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in 
ambari-server:

                  org.apache.ambari.server.agent.TestHeartbeatMonitor

Test results: 
https://builds.apache.org/job/Ambari-trunk-test-patch/2794//testReport/
Console output: 
https://builds.apache.org/job/Ambari-trunk-test-patch/2794//console

This message is automatically generated.

> During Upgrade Warn If Multiple Metastores Are Not Present
> ----------------------------------------------------------
>
>                 Key: AMBARI-11288
>                 URL: https://issues.apache.org/jira/browse/AMBARI-11288
>             Project: Ambari
>          Issue Type: Task
>          Components: ambari-server
>    Affects Versions: 2.1.0
>            Reporter: Jonathan Hurley
>            Assignee: Jonathan Hurley
>             Fix For: 2.1.0
>
>         Attachments: AMBARI-11288.patch
>
>
> Having multiple metastore instances is recommended for rolling upgrade. This 
> ensures that there is at least one metastore that is up and running during 
> the RU process and reduces the chances of failure.
> {panel}
> Hive Metastore Availability
> Multiple Hive Metastore instances are recommended for Rolling Upgrade. This 
> ensures that there is at least one Metastore running during the upgrade 
> process.
> {panel}



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