Uma Maheswara Rao G created HDFS-11029:

             Summary: Provide retry mechanism for the blocks which were failed 
while moving its storage at DNs
                 Key: HDFS-11029
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: namenode
    Affects Versions: HDFS-10285
            Reporter: Uma Maheswara Rao G
            Assignee: Uma Maheswara Rao G

When DN co-ordinator finds some of blocks associated to trackedID could not be 
moved its storages, due to some errors.Here retry may work in some cases, 
example if target node has no space. Then retry by finding another target can 
So, based on the movement result flag(SUCCESS/FAILURE) from DN Co-ordinator,  
NN would retry by scanning the blocks again.

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