GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/22514
[SPARK-25271][SQL] Hive ctas commands should use data source if it is
convertible
## What changes were proposed in this pull request?
We have a
[regression](https://github.com/apache/spark/pull/20521/files#r217254430) since
2.3.1 that Hive ctas command only uses Hive Serde to write data. Hive ctas
command previously will use Parquet/Orc data source to write data if it is
convertible.
Because of it, the related regression reported by this JIRA is when writing
a empty map in to Hive using ctas, it hits Hive's known issue and is thrown
exception.
## How was this patch tested?
Added test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/viirya/spark-1 SPARK-25271-2
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22514.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 #22514
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commit 5debc6096ae6e505d3386fd7eb569d154f158d55
Author: Liang-Chi Hsieh <viirya@...>
Date: 2018-09-12T10:33:53Z
Hive ctas commands should use data source format if it is convertible.
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