Garbage collection on slaves
----------------------------

                 Key: MESOS-149
                 URL: https://issues.apache.org/jira/browse/MESOS-149
             Project: Mesos
          Issue Type: Improvement
          Components: slave
            Reporter: Thomas Marshall
            Assignee: Thomas Marshall


Currently, there is no garbage collection of completed executors/frameworks on 
slaves, leading to local directories periodically filling up. 

Design proposal:

- A libprocess process that gets messages when an executor has gotten cleaned 
up and sets some timeout when it should clean up the directory. Abstracting it 
this way is nice because we could add other capabilities like copying the 
directory output to HDFS if requested by the user.

- Making sure directories continue to get cleaned up after a slave restarts 

- Make sure frameworks use their executor's working directory for storage 
rather than a hard-configured path (e.g. /tmp)

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