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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5124) Namenode in secure cluster deadlocks
Date Thu, 22 Aug 2013 18:19:53 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13747742#comment-13747742
] 

Chris Nauroth commented on HDFS-5124:
-------------------------------------

Let's add a comment.  It's non-obvious that we're holding the namesystem lock to coordinate
with an HA failover, especially considering that there is no actual namesystem manipulation
like Daryn pointed out.  :-)
                
> Namenode in secure cluster deadlocks
> ------------------------------------
>
>                 Key: HDFS-5124
>                 URL: https://issues.apache.org/jira/browse/HDFS-5124
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.1.1-beta
>         Environment: Secure Hadoop 2 cluster
>            Reporter: Deepesh Khandelwal
>            Assignee: Jing Zhao
>            Priority: Blocker
>         Attachments: HADOOP-5124.patch, HDFS-5124.001.patch, HDFS-5124.002.patch, nn_jstack.out
>
>
> Namenode deadlocks after a while in use.

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