GitHub user tyro89 opened a pull request:
https://github.com/apache/spark/pull/371
Modify the partition function used by partitionBy.
Make partitionBy use a tweaked version of hash as its default partition
function
since the python hash function does not consistently assign the same value
to None across python processes.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Shopify/spark consistent_hashing
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/371.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 #371
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commit 201c30101cef4ac17ee3082cc373285a4f613caf
Author: Erik Selin <[email protected]>
Date: 2014-04-09T21:06:33Z
Make partitionBy use a tweaked version of hash as its default partition
function
since the python hash function does not consistently assign the same value
to None across python processes.
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