GitHub user SereneAnt opened a pull request:
https://github.com/apache/spark/pull/18775
[SPARK-8577][SparkR] Eliminate needless synchronization in java-R
serialization
## What changes were proposed in this pull request?
Remove surplus synchronized blocks.
## How was this patch tested?
Unit tests run OK.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/SereneAnt/spark
eliminate_unnecessary_synchronization_in_java-R_serialization
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18775.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 #18775
----
commit eafad7d0cdf73c9fab9a03f2898039de7b127bc7
Author: iurii.ant <serene...@gmail.com>
Date: 2017-07-30T05:04:06Z
[SPARK-8577][SparkR] Eliminate needless synchronization in java-R
serialization
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