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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3918) EditLogTailer shouldn't log WARN when other node is in standby mode
Date Tue, 31 Mar 2015 12:14:59 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14388435#comment-14388435
] 

Hudson commented on HDFS-3918:
------------------------------

SUCCESS: Integrated in Hadoop-Yarn-trunk #883 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/883/])
HDFS-3918. EditLogTailer shouldn't log WARN when other node is in standby mode. Contributed
by Todd Lipcon. (harsh: rev cce66ba3c9ec293e8ba1afd0eb518c7ca0bbc7c9)
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/EditLogTailer.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt


> EditLogTailer shouldn't log WARN when other node is in standby mode
> -------------------------------------------------------------------
>
>                 Key: HDFS-3918
>                 URL: https://issues.apache.org/jira/browse/HDFS-3918
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: ha
>    Affects Versions: 2.0.3-alpha
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 2.8.0
>
>         Attachments: hdfs-3918.txt
>
>
> If both nodes are in standby mode, each will be trying to roll the others' logs, which
results in errors like:
> Unable to trigger a roll of the active NN 
> org.apache.hadoop.ipc.StandbyException: Operation category JOURNAL is not supported in
state standby
> We should catch this specific exception and not log it at WARN level, since it's expected
behavior.



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