GitHub user icexelloss opened a pull request:
https://github.com/apache/spark/pull/20239
[SPARK-23047][PYTHON][SQL] Change MapVector to NullableMapVector in
ArrowColumnVector
## What changes were proposed in this pull request?
This PR changes usage of `MapVector` in Spark codebase to use
`NullableMapVector`.
`MapVector` is an internal Arrow class that is not supposed to be used
directly. We should use `NullableMapVector` instead.
## How was this patch tested?
Existing test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/icexelloss/spark arrow-map-vector
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20239.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 #20239
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commit 0e59098575f0e614ecac4bf22dd21da838b241de
Author: Li Jin <ice.xelloss@...>
Date: 2018-01-11T20:43:53Z
Change MapVector to NullableMapVector in ArrowColumnVector
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