GitHub user rdblue opened a pull request:
https://github.com/apache/spark/pull/13482
SPARK-15725: Ensure ApplicationMaster sleeps for the min interval.
## What changes were proposed in this pull request?
Update `ApplicationMaster` to sleep for at least the minimum allocation
interval before calling `allocateResources`. This prevents overloading the
`YarnAllocator` that is happening because the thread is triggered when an
executor is killed and its connections die. In YARN, this prevents the app from
overloading the allocator and becoming unstable.
## How was this patch tested?
Tested that this allows the an app to recover instead of hanging. It is
still possible for the YarnAllocator to be overwhelmed by requests, but this
prevents the issue for the most common cause.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rdblue/spark SPARK-15725-am-sleep-work-around
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13482.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #13482
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commit fde631bd565170573628273247f2c717ffb4b67b
Author: Ryan Blue <b...@apache.org>
Date: 2016-05-31T18:52:59Z
SPARK-15725: Ensure ApplicationMaster sleeps for the min interval.
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