GitHub user mengxr opened a pull request:
https://github.com/apache/spark/pull/1229
[SPARK-2251] fix concurrency issues in random sampler
The following code is very likely to throw an exception:
~~~
val rdd = sc.parallelize(0 until 111, 10).sample(false, 0.1)
rdd.zip(rdd).count()
~~~
because the same random number generator is used in compute partitions.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mengxr/spark fix-sample
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/1229.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 #1229
----
commit e7f5f5a4a81ee546fe157846b8cf527e1fba9a63
Author: Xiangrui Meng <[email protected]>
Date: 2014-06-26T08:45:46Z
fix concurrency issues in random sampler
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