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Posted to hdfs-dev@hadoop.apache.org by "Daryn Sharp (JIRA)" <ji...@apache.org> on 2015/05/28 18:32:17 UTC

[jira] [Created] (HDFS-8492) DN should notify NN when client requests a missing block

Daryn Sharp created HDFS-8492:
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             Summary: DN should notify NN when client requests a missing block
                 Key: HDFS-8492
                 URL: https://issues.apache.org/jira/browse/HDFS-8492
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.0.0-alpha
            Reporter: Daryn Sharp


If the DN has a block its volume map but not on-disk, it tells clients it's an invalid block id.  The NN is not informed of the missing block until either the bp slice scanner or the directory scanner detects the missing block.  DN should remove the replica from the volume map and inform the NN.



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