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Date: Wed, 11 Jul 2012 05:11:34 +0000 (UTC)
From: "Hudson (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-3611) NameNode prints unnecessary WARNs
 about edit log normally skipping a few bytes
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    [ https://issues.apache.org/jira/browse/HDFS-3611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13411243#comment-13411243 ] 

Hudson commented on HDFS-3611:
------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #2464 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/2464/])
    HDFS-3611. NameNode prints unnecessary WARNs about edit log normally skipping a few bytes. Contributed by Colin Patrick McCabe. (harsh) (Revision 1360001)

     Result = FAILURE
harsh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1360001
Files : 
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EditLogFileInputStream.java

                
> NameNode prints unnecessary WARNs about edit log normally skipping a few bytes
> ------------------------------------------------------------------------------
>
>                 Key: HDFS-3611
>                 URL: https://issues.apache.org/jira/browse/HDFS-3611
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 2.0.0-alpha
>            Reporter: Harsh J
>            Assignee: Colin Patrick McCabe
>            Priority: Trivial
>              Labels: newbie
>             Fix For: 2.0.1-alpha
>
>         Attachments: HDFS-3611.001.patch, HDFS-3611.001.patch
>
>
> The NameNode currently warns these form of lines at every startup, even if there's no trouble really. For instance, the below is from a NN startup that was only just freshly formatted.
> {code}
> 12/07/08 20:00:22 WARN namenode.EditLogInputStream: skipping 1048563 bytes at the end of edit log  '/Users/harshchouraria/Work/installs/temp-space/tmp-default/dfs-cdh4/data/current/edits_0000000000000000003-0000000000000000003': reached txid 3 out of 3
> {code}
> If this skipping is not really a cause for warning, we should not log it at a WARN level but at an INFO or even DEBUG one. Avoids users getting unnecessarily concerned.

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