GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/7765
[SPARK-9460] Avoid byte array allocation in StringPrefixComparator.
As of today, StringPrefixComparator converts the long values back to byte
arrays in order to compare them. This patch optimizes this to compare the longs
directly, rather than turning the longs into byte arrays and comparing them
byte by byte (unsigned).
This only works on little-endian architecture right now.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-9460
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7765.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 #7765
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commit 4c8d094362a49fbe74fab6ea13f6ab90dae07bc1
Author: Reynold Xin <[email protected]>
Date: 2015-07-30T01:41:49Z
[SPARK-9460] Avoid byte array allocation in StringPrefixComparator.
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