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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HDFS-4176) EditLogTailer should call rollEdits with a timeout
Date Thu, 30 Apr 2015 23:28:06 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Zhe Zhang reassigned HDFS-4176:

    Assignee: Zhe Zhang

> EditLogTailer should call rollEdits with a timeout
> --------------------------------------------------
>                 Key: HDFS-4176
>                 URL: https://issues.apache.org/jira/browse/HDFS-4176
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, namenode
>    Affects Versions: 3.0.0, 2.0.2-alpha
>            Reporter: Todd Lipcon
>            Assignee: Zhe Zhang
>         Attachments: namenode.jstack4
> When the EditLogTailer thread calls rollEdits() on the active NN via RPC, it currently
does so without a timeout. So, if the active NN has frozen (but not actually crashed), this
call can hang forever. This can then potentially prevent the standby from becoming active.
> This may actually considered a side effect of HADOOP-6762 -- if the RPC were interruptible,
that would also fix the issue.

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