[jira] [Created] (SPARK-2008) Enhance spark-ec2 to be able to add and remove slaves to an existing cluster

["Nicholas Chammas (JIRA)" <ji...@apache.org>]

Nicholas Chammas created SPARK-2008:
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             Summary: Enhance spark-ec2 to be able to add and remove slaves to an existing cluster
                 Key: SPARK-2008
                 URL: https://issues.apache.org/jira/browse/SPARK-2008
             Project: Spark
          Issue Type: New Feature
          Components: EC2
    Affects Versions: 1.0.0
            Reporter: Nicholas Chammas


Per [the discussion here|http://apache-spark-user-list.1001560.n3.nabble.com/Having-spark-ec2-join-new-slaves-to-existing-cluster-td3783.html]:

{quote}
I would like to be able to use spark-ec2 to launch new slaves and add them to an existing, running cluster. Similarly, I would also like to remove slaves from an existing cluster.

Use cases include:
* Oh snap, I sized my cluster incorrectly. Let me add/remove some slaves.
* During scheduled batch processing, I want to add some new slaves, perhaps on spot instances. When that processing is done, I want to kill them. (Cruel, I know.)

I gather this is not possible at the moment. spark-ec2 appears to be able to launch new slaves for an existing cluster only if the master is stopped. I also do not see any ability to remove slaves from a cluster.
{quote}



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