GitHub user sameeragarwal opened a pull request:
https://github.com/apache/spark/pull/12103
Make ColumnarBatch.Row mutable
## What changes were proposed in this pull request?
In order to leverage a data structure like `AggregateHashMap`
(https://github.com/apache/spark/pull/12055) to speed up aggregates with keys,
we need to make `ColumnarBatch.Row` mutable.
## How was this patch tested?
Unit test in `ColumnarBatchSuite`. Also, tested via
`BenchmarkWholeStageCodegen`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sameeragarwal/spark mutable-row
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12103.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 #12103
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commit a1fe9f83c182ea02b6c9a8825ba90f10a5e6d638
Author: Sameer Agarwal <sam...@databricks.com>
Date: 2016-03-31T21:15:34Z
Make ColumnarBatch.Row mutable
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