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https://issues.apache.org/jira/browse/HDFS-1919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13032256#comment-13032256
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Suresh Srinivas commented on HDFS-1919:
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Todd, can you attach the log for next restart of NN where you got an exception.
> Upgrade to federated namespace fails
> ------------------------------------
>
> Key: HDFS-1919
> URL: https://issues.apache.org/jira/browse/HDFS-1919
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Blocker
> Fix For: 0.23.0
>
> Attachments: hdfs-1919.txt
>
>
> I formatted a namenode running off 0.22 branch, and trying to start it on
> trunk yields:
> org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory
> /tmp/name1 is in an inconsistent state: file VERSION has clusterID mising.
> It looks like 0.22 has LAYOUT_VERSION -33, but trunk has
> LAST_PRE_FEDERATION_LAYOUT_VERSION = -30, which is incorrect.
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