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From "Swapnil Daingade (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-2791) Add Disk as a resource for scheduling
Date Fri, 31 Oct 2014 21:24:35 GMT
Swapnil Daingade created YARN-2791:
--------------------------------------

             Summary: Add Disk as a resource for scheduling
                 Key: YARN-2791
                 URL: https://issues.apache.org/jira/browse/YARN-2791
             Project: Hadoop YARN
          Issue Type: New Feature
          Components: scheduler
    Affects Versions: 2.5.1
            Reporter: Swapnil Daingade


Currently, the number of disks present on a node is not considered a factor while scheduling
containers on that node. Having large amount of memory on a node can lead to high number of
containers being launched on that node, all of which compete for I/O bandwidth. This multiplexing
of I/O across containers can lead to slower overall progress and sub-optimal resource utilization
as containers starved for I/O bandwidth hold on to other resources like cpu and memory. This
problem can be solved by considering disk as a resource and including it in deciding how many
containers can be concurrently run on a node.




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