Make DataNode's block-to-device placement policy pluggable
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Key: HDFS-1120
URL: https://issues.apache.org/jira/browse/HDFS-1120
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node
Reporter: Jeff Hammerbacher
As discussed on the mailing list, as the number of disk drives per server
increases, it would be useful to allow the DataNode's policy for new block
placement to grow in sophistication from the current round-robin strategy.
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