GitHub user liufengdb opened a pull request:
https://github.com/apache/spark/pull/18400
[SPARK-21188][CORE] releaseAllLocksForTask should synchronize the whole
method
## What changes were proposed in this pull request?
Since the objects `readLocksByTask`, `writeLocksByTask` and `info`s are
coupled and supposed to be modified by other threads concurrently, all the read
and writes of them in the method `releaseAllLocksForTask` should be protected
by a single synchronized block like other similar methods.
## How was this patch tested?
existing tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liufengdb/spark synchronize
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18400.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 #18400
----
commit 5cdd328ee9a32969377cbdbfea229cc364dbee17
Author: Feng Liu <[email protected]>
Date: 2017-06-23T05:24:07Z
init
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