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From "Konstantin Boudnik (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-591) Namenode should mark the replica as corrupted if a DN has reported different length of a Complete block
Date Wed, 02 Sep 2009 21:44:32 GMT
Namenode should mark the replica as corrupted if a DN has reported different length of a Complete
block
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                 Key: HDFS-591
                 URL: https://issues.apache.org/jira/browse/HDFS-591
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: name-node
            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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