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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-159) name node at 100% cpu, making redundant replications
Date Fri, 05 May 2006 22:19:29 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-159?page=all ]

Doug Cutting updated HADOOP-159:
--------------------------------

    Fix Version: 0.3
                     (was: 0.2)

> name node at 100% cpu, making redundant replications
> ----------------------------------------------------
>
>          Key: HADOOP-159
>          URL: http://issues.apache.org/jira/browse/HADOOP-159
>      Project: Hadoop
>         Type: Bug

>   Components: dfs
>     Versions: 0.1.1
>     Reporter: Yoram Arnon
>     Assignee: Sameer Paranjpye
>     Priority: Blocker
>      Fix For: 0.3

>
> some hours after adding some new nodes to the cluster, the name node went into a state
where it's consuming 100% cpu.
> The log file keeps logging messages of the forms
> 060421 155049 Obsoleting block blk_8093115169359854355
> 060421 155049 Pending transfer (block blk_-6965677235456960523) from node1383:50010 to
2 destinations
> 060421 155049 Block report from node1283:50010: 2140 blocks.
> 060421 155049 Redundant addStoredBlock request received for block blk_-6836937139917042917
on node node1143:50010
> many DFS operations time out, making useful work impossible.
> restarting dfs solved the problem for a while, but it came back within an hour.

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