GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/9572
[SPARK-11597][SQL][WIP] improve performance of array and map encoder
The overall idea is to split `MapObjects` into `MapArray` and `MapMap` to
handle array and map efficient.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark perf
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/9572.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 #9572
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commit 7c99cf88d9b2a0c7dbbe234ac216b979e47960da
Author: Wenchen Fan <[email protected]>
Date: 2015-11-09T18:45:24Z
first
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