GitHub user zsxwing opened a pull request:
https://github.com/apache/spark/pull/15646
[SPARK-13747][SQL] Fix concurrent executions in ForkJoinPool for SQL
(branch 2.0)
## What changes were proposed in this pull request?
Backport #15520 to 2.0.
## How was this patch tested?
Jenkins
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zsxwing/spark SPARK-13747-2.0
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15646.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 #15646
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commit eba011aea147f8eb6eb50dd380512167e48e4624
Author: Shixiong Zhu <[email protected]>
Date: 2016-10-26T17:36:36Z
[SPARK-13747][SQL] Fix concurrent executions in ForkJoinPool for SQL
Calling `Await.result` will allow other tasks to be run on the same thread
when using ForkJoinPool. However, SQL uses a `ThreadLocal` execution id to
trace Spark jobs launched by a query, which doesn't work perfectly in
ForkJoinPool.
This PR just uses `Awaitable.result` instead to prevent ForkJoinPool from
running other tasks in the current waiting thread.
Jenkins
Author: Shixiong Zhu <[email protected]>
Closes #15520 from zsxwing/SPARK-13747.
(cherry picked from commit 7ac70e7ba8d610a45c21a70dc28e4c989c19451b)
Signed-off-by: Shixiong Zhu <[email protected]>
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