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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10536) Standby NN can not trigger log roll after EditLogTailer thread failed 3 times in EditLogTailer.triggerActiveLogRoll method.
Date Sun, 26 Jun 2016 10:25:33 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10536?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinayakumar B updated HDFS-10536:
---------------------------------
      Resolution: Fixed
        Assignee: XingFeng Shen
    Hadoop Flags: Reviewed
          Status: Resolved  (was: Patch Available)

Committed to trunk, 
Thanks for the contribution [~xingfengshen].

> Standby NN can not trigger log roll after EditLogTailer thread failed 3 times in EditLogTailer.triggerActiveLogRoll
method.
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-10536
>                 URL: https://issues.apache.org/jira/browse/HDFS-10536
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: auto-failover
>    Affects Versions: 3.0.0-alpha1
>            Reporter: XingFeng Shen
>            Assignee: XingFeng Shen
>            Priority: Critical
>              Labels: patch
>             Fix For: 3.0.0-alpha1
>
>         Attachments: HDFS-10536-02.patch, HDFS-10536.02.patch, HDFS-10536.patch
>
>
> When all NameNodes become standby, EditLogTailer will retry 3 times to trigger log roll,
then it will be failed and throw Exception "Cannot find any valid remote NN to service request!".
After one namenode become active, standby NN still can not trigger log roll again because
variable "nnLoopCount" is still 3, it can not init to 0.



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