GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/20277
[SPARK-23090][SQL] polish ColumnVector
## What changes were proposed in this pull request?
Several improvements:
* make ColumnVector an interface instead of abstract class
* provide a default implementation for the batch get methods
* remove `arrayData`, as it's always the first child column vector
* rename `getChildColumn` to `getChild`, which is more concise
## How was this patch tested?
existing tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark column-vector
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20277.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 #20277
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commit ba7ca0f168b35e381a9fd53ca59dd39d9dbd5920
Author: Wenchen Fan <wenchen@...>
Date: 2018-01-16T16:38:28Z
polish ColumnVector
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