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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3611) NameNode prints unnecessary WARNs about edit log normally skipping a few bytes
Date Wed, 11 Jul 2012 03:37:35 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3611?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Harsh J updated HDFS-3611:
--------------------------

    Attachment: HDFS-3611.001.patch

+1, test isn't required and findbugs are unrelated. One nit, that LOG.debug statements must
always be wrapped inside LOG.isDebugEnabled() condition blocks, I've fixed myself since it
was trivial to. Please just ensure this in the future debug log printing/changes.

Committing.
                
> 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
>         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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