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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4982) JournalNode should relogin from keytab before fetching logs from other JNs
Date Thu, 11 Jul 2013 23:19:49 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4982?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon updated HDFS-4982:
------------------------------

    Status: Patch Available  (was: Open)
    
> 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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