GitHub user mengxr opened a pull request:
https://github.com/apache/spark/pull/1234
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.
This fix doesn't change the type signature.
@pwendell
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mengxr/spark fix-sample-1.0
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/1234.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 #1234
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commit 88795e2e2e64108a71ee003f192dd30ea0df496c
Author: Xiangrui Meng <[email protected]>
Date: 2014-06-26T17:22:57Z
fix concurrency issues in random sampler
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