GitHub user sryza opened a pull request:
https://github.com/apache/spark/pull/1461
SPARK-2553. CoGroupedRDD unnecessarily allocates a Tuple2 per dependency...
... per key
My humble opinion is that avoiding allocations in this performance-critical
section is worth the extra code.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sryza/spark sandy-spark-2553
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/1461.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 #1461
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commit 7eaf7f2a18ddea7ee47aacb5c5559c278a924899
Author: Sandy Ryza <sa...@cloudera.com>
Date: 2014-07-17T08:19:48Z
SPARK-2553. CoGroupedRDD unnecessarily allocates a Tuple2 per dependency
per key
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