GitHub user lovexi opened a pull request:
https://github.com/apache/spark/pull/14110
[SPARK-16455] Add isClusterAvailableForNewOffers hook to check cluster
availability
## What changes were proposed in this pull request?
In our case, we are implementing restartable resource manager mechanism
which will let master executor survive when resource manager service is
temporarily down. So when resource manager service is not available, scheduler
should stop scheduling new tasks. I added a hook inside
CoarseGrainedSchedulerBackend class, in order to avoid new task scheduling when
it's necessary.
JIRA link: https://issues.apache.org/jira/browse/SPARK-16455
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/lovexi/spark scheduler
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14110.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 #14110
----
commit 4f05f58544dee7606d4faf6864f84135e89934d1
Author: Yangyang Liu <yangyang...@fb.com>
Date: 2016-07-08T23:39:40Z
Add isClusterAvailableForNewOffers hook to check cluster availability
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