GitHub user davies opened a pull request:
https://github.com/apache/spark/pull/1898
[SPARK-705] [PySpark] improve performance of sortByKey()
1. skip partitionBy() when numOfPartition is 1
2. use bisect_left (O(lg(N))) instread of loop (O(N)) in
rangePartitioner
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/davies/spark sort
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/1898.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 #1898
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commit 1cf956548e1eb77b664ae13dd3f46a12987478bf
Author: Davies Liu <[email protected]>
Date: 2014-08-12T01:27:12Z
improve performance of sortByKey()
1. skip partitionBy() when numOfPartition is 1
2. use bisect_left (O(lg(N))) instread of loop (O(N)) in
rangePartitioner
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