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https://issues.apache.org/jira/browse/HDFS-591?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved HDFS-591.
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Resolution: Duplicate
> Namenode should mark the replica as corrupted if a DN has reported different
> length of a Complete block
> -------------------------------------------------------------------------------------------------------
>
> Key: HDFS-591
> URL: https://issues.apache.org/jira/browse/HDFS-591
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: Konstantin Boudnik
>
> it has been found that NameNode is updating the length of a Complete block
> when its reported by a DataNode. As demonstrated by
> BlockReport.messWithBlocksLen() test ([see HDFS-551's
> patch|https://issues.apache.org/jira/secure/attachment/12418437/HDFS-551.patch]),
> when the length of blocks is changed and a block report is forced for the
> set of the blocks NameNode updates these lengths in memory, instead of
> marking such replicas as corrupted.
> It seems to be a wrong behavior.
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