Support additional security group option in hadoop-ec2 script
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Key: HADOOP-6444
URL: https://issues.apache.org/jira/browse/HADOOP-6444
Project: Hadoop Common
Issue Type: Improvement
Components: contrib/ec2
Reporter: Paul Egan
Priority: Minor
When deploying a hadoop cluster on ec2 alongside other services it is very
useful to be able to specify additional (pre-existing) security groups to
facilitate access control. For example one could use this feature to add a
cluster to a generic "hadoop" group, which authorizes hdfs access from
instances outside the cluster. Without such an option the access control for
the security groups created by the script need to manually updated after
cluster launch.
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