GitHub user jxiang reopened a pull request:
https://github.com/apache/spark/pull/17091
[SPARK-19757][CORE] DriverEndpoint#makeOffers race against
CoarseGrainedSchedulerBackend#killExecutors
## What changes were proposed in this pull request?
While some executors are being killed due to idleness, if some new tasks
come in, driver could assign them to some executors are being killed. These
tasks will fail later when the executors are lost. This patch is to make sure
CoarseGrainedSchedulerBackend#killExecutors and DriverEndpoint#makeOffers are
properly synchronized.
## How was this patch tested?
manual tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jxiang/spark spark-19757
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17091.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 #17091
----
commit 9ade0fd49d023b8f3d12e15b47c5fdd513e3a7db
Author: Jimmy Xiang <jxi...@apache.org>
Date: 2017-02-28T00:27:45Z
[SPARK-19757][CORE] Executor with task scheduled could be killed due to
idleness
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