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From "XingFeng Shen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10536) Standby NN can not trigger log roll after EditLogTailer thread failed 3 times in EditLogTailer.triggerActiveLogRoll method.
Date Wed, 22 Jun 2016 11:43:57 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15344160#comment-15344160
] 

XingFeng Shen commented on HDFS-10536:
--------------------------------------

[~vinayrpet], I had update the patch, please help to check it .

> 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
>            Priority: Critical
>              Labels: patch
>             Fix For: 3.0.0-alpha1
>
>         Attachments: 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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