Remove a datanode from cluster if include list is not empty and this datanode
is removed from both include and exclude lists
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Key: HDFS-1773
URL: https://issues.apache.org/jira/browse/HDFS-1773
Project: Hadoop HDFS
Issue Type: Improvement
Affects Versions: 0.20.203.1
Environment: branch-20-security
Reporter: Tanping Wang
Assignee: Tanping Wang
Fix For: 0.20.4
Our service engineering team who operates the clusters on a daily basis founds
it is confusing that after a data node is decommissioned, there is no way to
make the cluster forget about this data node and it always remains in the dead
node list.
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