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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-1106) Number of DataNodes less than target replication causes NameNode WARN message every millisecond
Date Tue, 08 May 2007 19:03:15 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Owen O'Malley updated HADOOP-1106:
----------------------------------

    Priority: Blocker  (was: Major)

> Number of DataNodes less than target replication causes NameNode WARN message every millisecond
> -----------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1106
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1106
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.12.0
>            Reporter: Nigel Daley
>            Priority: Blocker
>             Fix For: 0.13.0
>
>
> When I startup a 4 DataNode cluster that already contains files with a target replication
of 3, but 2 of the DataNodes fail to come online (ie. there are fewer DataNodes then the target
replication), I get the following output in the NameNode log every millisecond or less, continued
forever:
> 2007-03-09 22:45:22,848 WARN org.apache.hadoop.fs.FSNamesystem: Not able to place enough
replicas, still in need of 2
> 2007-03-09 22:45:22,849 WARN org.apache.hadoop.fs.FSNamesystem: Not able to place enough
replicas, still in need of 2
> 2007-03-09 22:45:22,850 WARN org.apache.hadoop.fs.FSNamesystem: Not able to place enough
replicas, still in need of 2
> 2007-03-09 22:45:22,851 WARN org.apache.hadoop.fs.FSNamesystem: Not able to place enough
replicas, still in need of 2
> 2007-03-09 22:45:22,852 WARN org.apache.hadoop.fs.FSNamesystem: Not able to place enough
replicas, still in need of 2
> 2007-03-09 22:45:22,852 WARN org.apache.hadoop.fs.FSNamesystem: Not able to place enough
replicas, still in need of 2
> 2007-03-09 22:45:22,853 WARN org.apache.hadoop.fs.FSNamesystem: Not able to place enough
replicas, still in need of 2
> 2007-03-09 22:45:22,853 WARN org.apache.hadoop.fs.FSNamesystem: Not able to place enough
replicas, still in need of 2
> 2007-03-09 22:45:22,854 WARN org.apache.hadoop.fs.FSNamesystem: Not able to place enough
replicas, still in need of 2

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