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From "Gilbert Song (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MESOS-3736) Support docker local store get same image simultaneously
Date Wed, 14 Oct 2015 21:23:06 GMT
Gilbert Song created MESOS-3736:
-----------------------------------

             Summary: Support docker local store get same image simultaneously 
                 Key: MESOS-3736
                 URL: https://issues.apache.org/jira/browse/MESOS-3736
             Project: Mesos
          Issue Type: Improvement
            Reporter: Gilbert Song
            Assignee: Gilbert Song


The current local store implements get() using the local puller. For all requests of pulling
same docker image at the same time, the local puller just untar the image tarball as many
times as those requests are, and cp all of them to the same directory, which wastes time and
bear high demand of computation. We should be able to support the local store/puller only
do these for the first time, and the simultaneous pulling request should wait for the promised
future and get it once the first pulling finishes. 



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