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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4176) EditLogTailer should call rollEdits with a timeout
Date Thu, 28 Jul 2016 17:40:20 GMT

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

Lei (Eddy) Xu updated HDFS-4176:
    Attachment: HDFS-4176.04.patch

Sure, [~jingzhao] 

Updated the patch to fix the conflicts from HDFS-10519.

> 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: 2.0.2-alpha, 3.0.0-alpha1
>            Reporter: Todd Lipcon
>            Assignee: Lei (Eddy) Xu
>         Attachments: HDFS-4176.00.patch, HDFS-4176.01.patch, HDFS-4176.02.patch, HDFS-4176.03.patch,
HDFS-4176.04.patch, 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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