The ReplicationMonitor sleep period should be configurable
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Key: HADOOP-2649
URL: https://issues.apache.org/jira/browse/HADOOP-2649
Project: Hadoop
Issue Type: Bug
Components: dfs
Reporter: dhruba borthakur
Fix For: 0.16.0
The HDFS Namenode computes replication work for datanodes once every 3 seconds.
This should be a configurable value. On large clusters, there could be many
many blocks in the neededReplication queue and computing replication work for
datanodes once every 3 seconds might consume lots of CPU on namenode.
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