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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8041) HA: log a warning when a failover is first attempted
Date Fri, 10 Feb 2012 12:57:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13205421#comment-13205421
] 

Hudson commented on HADOOP-8041:
--------------------------------

Integrated in Hadoop-Hdfs-HAbranch-build #74 (See [https://builds.apache.org/job/Hadoop-Hdfs-HAbranch-build/74/])
    HADOOP-8041. Log a warning when a failover is first attempted. Contributed by Todd Lipcon.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1242441
Files : 
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/CHANGES.HDFS-1623.txt
* /hadoop/common/branches/HDFS-1623/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/RetryInvocationHandler.java

                
> HA: log a warning when a failover is first attempted 
> -----------------------------------------------------
>
>                 Key: HADOOP-8041
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8041
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: ha
>    Affects Versions: HA Branch (HDFS-1623)
>            Reporter: Eli Collins
>            Assignee: Todd Lipcon
>             Fix For: HA Branch (HDFS-1623)
>
>         Attachments: hadoop-8041.txt
>
>
> Currently we always warn for each client operation made to a NN we've failedover to:
> {noformat}
> hadoop-0.24.0-SNAPSHOT $ ./bin/hdfs dfs -lsr /
> 12/02/08 17:43:04 WARN retry.RetryInvocationHandler: Exception while invoking getFileInfo
of class
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB after 0 fail over
attempts. Trying to fail over immediately.
> {noformat}
> I'm going to remove this warning in HDFS-2922 since we shouldn't warn every time a client
performs an operation, eg could be weeks after the failover. But we should eg log a warning
when the client first does a failover so it shows up eg in the MR and HBase logs.

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