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Date: Wed, 11 May 2016 13:20:12 +0000 (UTC)
From: "Daniel Templeton (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Message-ID: <JIRA.12952592.1458680307000.165207.1462972812904@Atlassian.JIRA>
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References: <JIRA.12952592.1458680307000@Atlassian.JIRA> <JIRA.12952592.1458680307554@arcas>
Subject: [jira] [Commented] (MAPREDUCE-6657) job history server can fail on
 startup when NameNode is in start phase
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archived-at: Wed, 11 May 2016 13:20:19 -0000


    [ https://issues.apache.org/jira/browse/MAPREDUCE-6657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15280098#comment-15280098 ] 

Daniel Templeton commented on MAPREDUCE-6657:
---------------------------------------------

OK.  Latest patch looks good to me.  [~rkanter]?

> job history server can fail on startup when NameNode is in start phase
> ----------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6657
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6657
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobhistoryserver
>            Reporter: Haibo Chen
>            Assignee: Haibo Chen
>         Attachments: mapreduce6657.001.patch, mapreduce6657.002.patch, mapreduce6657.003.patch, mapreduce6657.004.patch, mapreduce6657.005.patch
>
>
> Job history server will try to create a history directory in HDFS on startup. When NameNode is in safe mode, it will keep retrying for a configurable time period.  However, it should also keeps retrying if the name node is in start state. Safe mode does not happen until the NN is out of the startup phase. 
> A RetriableException with the text "NameNode still not started" is thrown when the NN is in its internal service startup phase. We should add the check for this specific exception in isBecauseSafeMode() to account for that.


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