GitHub user davies opened a pull request:
https://github.com/apache/spark/pull/2624
[SPARK-3762] clear reference of SparkEnv after stop
SparkEnv is cached in ThreadLocal object, so after stop and create a new
SparkContext, old SparkEnv is still used by some threads, it will trigger many
problems, for example, pyspark will have problem after restart SparkContext,
because py4j use thread pool for RPC.
This patch will clear all the references after stop a SparkEnv.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/davies/spark env
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/2624.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 #2624
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commit 4d0ea8bf5df513d5d1f4250286ca328192018f08
Author: Davies Liu <davies....@gmail.com>
Date: 2014-10-02T07:10:38Z
clear reference of SparkEnv after stop
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