GitHub user zsxwing opened a pull request:
https://github.com/apache/spark/pull/12915
[SPARK-15135][SQL]Make sure SparkSession thread safe
## What changes were proposed in this pull request?
Went through SparkSession and its members and fixed non-thread-safe classes
used by SparkSession
## How was this patch tested?
Existing unit tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zsxwing/spark spark-session-thread-safe
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12915.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 #12915
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commit 963f0432e18138299eadb429f04ed22da0abd756
Author: Shixiong Zhu <shixi...@databricks.com>
Date: 2016-05-04T22:04:57Z
Make sure SparkSession thread safe
Went through SparkSession and its members and fixed non-thread-safe classes
used by SparkSession
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