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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7960) NameNode should prune storages that are no longer existed on DataNode
Date Thu, 19 Mar 2015 23:19:38 GMT
Lei (Eddy) Xu created HDFS-7960:
-----------------------------------

             Summary: NameNode should prune storages that are no longer existed on DataNode
                 Key: HDFS-7960
                 URL: https://issues.apache.org/jira/browse/HDFS-7960
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.6.0
            Reporter: Lei (Eddy) Xu
            Assignee: Lei (Eddy) Xu


NameNode should be able to remove storages that is not represented on DataNode. For example,
hot swapped on that DataNode or DN restarted with less data dirs.  It seems that once a datanode
storage is removed from a datanode, those blocks on the storage will not be reconciled as
gone from the Namenode until the namenode has been restarted.



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