GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/20634
[SPARK-23456][SPARK-21783] Turn on `native` ORC impl and PPD by default
## What changes were proposed in this pull request?
Apache Spark 2.3 introduced `native` ORC supports with vectorization and
many fixes. However, it's shipped as a not-default option. This PR enables
`native` ORC implementation and predicate-pushdown by default for Apache Spark
2.4. We will improve and stabilize ORC data source before Apache Spark 2.4.
And, eventually, Apache Spark will drop old Hive-based ORC code.
## How was this patch tested?
Pass the Jenkins with existing tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-23456
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20634.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 #20634
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commit bde681816bc8251010aa14fd0f4fb27b732fd061
Author: Dongjoon Hyun <dongjoon@...>
Date: 2018-02-17T16:56:31Z
[SPARK-23456][SPARK-21783] Turn on `native` ORC impl and PPD by default
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