[
https://issues.apache.org/jira/browse/YARN-2791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14201101#comment-14201101
]
Karthik Kambatla commented on YARN-2791:
----------------------------------------
[~adityakishore] - unfortunately, YARN-2139 didn't have a description this far.
I just added a very succinct one. If you look at the design doc itself and the
sub-tasks created, you would see that YARN-2139 includes adding disk as a
resource to the resource-request-vector, the node-capacities, and the
scheduler.
[~sdaingade] - looking forward to you hear your thoughts and see a design doc.
> 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
> Assignee: Yuliya Feldman
>
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
