GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/19066
[SPARK-21255][SQL] simplify encoder for java enum
## What changes were proposed in this pull request?
This is a follow-up for https://github.com/apache/spark/pull/18488, to
simplify the code.
The major change is, we should map java enum to string type, instead of a
struct type with a single string field.
## 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 fix
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19066.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 #19066
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commit 481573dbf2614ccfa5ad515bc1bb97da5767453f
Author: Wenchen Fan <[email protected]>
Date: 2017-08-28T06:33:53Z
simplify encoder for java enum
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