Lei (Eddy) Xu created HDFS-7960:
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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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