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From "Brian Bockelman (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4866) NameNode error in commitBlockSynchronization
Date Wed, 17 Dec 2008 04:42:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12657283#action_12657283
] 

Brian Bockelman commented on HADOOP-4866:
-----------------------------------------

Even with the second patch, the extremely high rate of the log messages in the NN still appear.

> NameNode error in commitBlockSynchronization
> --------------------------------------------
>
>                 Key: HADOOP-4866
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4866
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.19.0
>            Reporter: Brian Bockelman
>         Attachments: 4866_20081215.patch, 4866_20081216.patch
>
>
> The NameNode continuously has an error in the commitBlockSynchronization.  This happens
for ~5 blocks at a rate of 5-10Hz.  I have no idea when this started happening because this
has been going on for days, well past the start of our current logs.
> This appears to be a new symptom in 0.19.0, but I have no idea what could be causing
it.

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