GitHub user ueshin opened a pull request:
https://github.com/apache/spark/pull/15548
[SPARK-17985][CORE] Bump commons-lang3 version to 3.5.
## What changes were proposed in this pull request?
`SerializationUtils.clone()` of commons-lang3 (<3.5) has a bug that breaks
thread safety, which gets stack sometimes caused by race condition of
initializing hash map.
See https://issues.apache.org/jira/browse/LANG-1251.
## How was this patch tested?
Existing tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ueshin/apache-spark issues/SPARK-17985
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15548.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 #15548
----
commit f318dffd4137c20bdc67ac054e345d55703d96de
Author: Takuya UESHIN <ues...@happy-camper.st>
Date: 2016-10-18T02:42:14Z
Bump commons-lang3 version to 3.5.
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