[jira] [Commented] (AMBARI-10067) ZKFailoverController failed on restart

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AMBARI-10067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14361108#comment-14361108 ] 

Hadoop QA commented on AMBARI-10067:
------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12704502/AMBARI-10067.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 test build failed in ambari-server 

Test results: https://builds.apache.org/job/Ambari-trunk-test-patch/2026//testReport/
Console output: https://builds.apache.org/job/Ambari-trunk-test-patch/2026//console

This message is automatically generated.

> ZKFailoverController failed on restart
> --------------------------------------
>
>                 Key: AMBARI-10067
>                 URL: https://issues.apache.org/jira/browse/AMBARI-10067
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-agent
>    Affects Versions: 2.0.0
>            Reporter: Jayush Luniya
>            Assignee: Jayush Luniya
>             Fix For: 2.0.0
>
>         Attachments: AMBARI-10067.patch
>
>
> Issue Summary:
> 1. When Namenode HA is enabled and "automatic failover" is selected, the "hdfs zkfc -formatZK" command is used to create a znode in ZooKeeper inside of which the automatic failover system stores its data.
> 2. When Namenode HA is enabled through the wizard, the user is asked to manually run this command. 
> 3. When Namenode HA cluster is deployed using HA blueprint, the agent script has been executing "hdfs zkfc -formatZK -force -nonInteractive" to auto-format the znode. This means that everytime a ZKFC starts, we end up formatting the znode used to maintain the failover state.
> Fix:
> 1. Changing the command to "hdfs zkfc -formatZK -nonInteractive" so that the failover state is not reformatted and handling the case when the command returns a status=2 to indicate that the znode already exists and hence skipping formatting it.



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