GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/17587
[SPARK-20274][SQL] support compatible array element type in encoder
## What changes were proposed in this pull request?
This is a regression caused by SPARK-19716.
Before SPARK-19716, we will cast an array field to the expected array type.
However, after SPARK-19716, the cast is removed, but we forgot to push the cast
to the element level.
## How was this patch tested?
new regression tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark array
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17587.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 #17587
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commit 001921fc508880a16d417f27bc3529392b906f00
Author: Wenchen Fan <[email protected]>
Date: 2017-04-10T06:51:54Z
support compatible array element type in encoder
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