GitHub user hvanhovell opened a pull request:
https://github.com/apache/spark/pull/13854
[SPARK-15956] [SQL] When unwrapping ORC avoid pattern matching at runtime
## What changes were proposed in this pull request?
Extend the returning of unwrapper functions from primitive types to all
types.
This PR is based on https://github.com/apache/spark/pull/13676. It only
fixes a bug with scala-2.10 compilation. All credit should go to @dafrista.
## How was this patch tested?
The patch should pass all unit tests. Reading ORC files with non-primitive
types with this change reduced the read time by ~15%.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hvanhovell/spark SPARK-15956-scala210
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13854.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 #13854
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commit bdd188546c6043b694e2b1e023a4e78f1e5fffdb
Author: Brian Cho <[email protected]>
Date: 2016-06-13T20:36:17Z
Avoid pattern matching in runtime when unwrapping ORC.
commit ca44f12a04312ced5f5e861df7dbe85d56f8b4af
Author: Brian Cho <[email protected]>
Date: 2016-06-15T05:28:18Z
Address comments: remove unwrap method.
commit 28a02f3afd362fe941e583cbc5ccbc0a9aefb4f2
Author: Brian Cho <[email protected]>
Date: 2016-06-20T07:18:26Z
Address comments: evaluate constant outside function, clean-up
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