Decommission fails if a block that needs replication has only one replica
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Key: HADOOP-1184
URL: https://issues.apache.org/jira/browse/HADOOP-1184
Project: Hadoop
Issue Type: Bug
Components: dfs
Reporter: dhruba borthakur
If the only replica of a block resides on a node being decommissioned, then the
decommission command does not complete. The blocks do not get added to
neededReplication because neededReplications.update() believes that the number
of current replicas is zero.
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