[EC2] 
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                 Key: HBASE-1980
                 URL: https://issues.apache.org/jira/browse/HBASE-1980
             Project: Hadoop HBase
          Issue Type: Improvement
            Reporter: Andrew Purtell
            Assignee: Andrew Purtell
            Priority: Minor
             Fix For: 0.21.0, 0.20.3


Tweak HBase EC2 scripts to provide an option for backing HDFS with EBS volumes 
instead of plain instance storage. 

Accept a list of EBS volume identifiers to assign to datanodes or dynamically 
create them on behalf of the user. Use ZK to coordinate volume mounts on the 
datanodes. 

Will also require terminate-hbase-cluster to do a clean HBase shutdown if EBS 
volumes are used rather than just ec2-terminate-instance. Presumably this 
option would be used to persist data across cluster instances. 

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