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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4982) JournalNode should relogin from keytab before fetching logs from other JNs
Date Fri, 12 Jul 2013 18:01:54 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13707176#comment-13707176
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Suresh Srinivas commented on HDFS-4982:
---------------------------------------

Jenkins -1s are due to some Jenkins machine that needs cleanup. 

+1 for the patch. Todd, can you also please merge it to branch-2.1.
                
> JournalNode should relogin from keytab before fetching logs from other JNs
> --------------------------------------------------------------------------
>
>                 Key: HDFS-4982
>                 URL: https://issues.apache.org/jira/browse/HDFS-4982
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: journal-node, security
>    Affects Versions: 3.0.0, 2.1.0-beta
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hdfs-4982.txt
>
>
> We've seen an issue in a secure cluster where, after a failover, the new NN isn't able
to properly coordinate QJM recovery. The JNs fail to fetch logs from each other due to apparently
not having a Kerberos TGT. It seems that we need to add the {{checkTGTAndReloginFromKeytab}}
call prior to making the HTTP connection, since the java HTTP stuff doesn't do an automatic
relogin

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