Swapnil Daingade created YARN-2791:
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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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