GitHub user maropu opened a pull request:
https://github.com/apache/spark/pull/17406
[SPARK-20009][SQL] Use DDL strings for defining schema in user-facing APIs
## What changes were proposed in this pull request?
This pr added `DataType.fromString` to support both existing json format
and new DDL format for defining schemas in user-facing APIs, e.g.,
`functions.from_json`.
## How was this patch tested?
Added tests in `JsonFunctionsSuite` and modified some existing tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/maropu/spark SPARK-20009
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17406.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 #17406
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commit 87abf7b23f284e3a7728efc90b2ac52a3ce9d294
Author: Takeshi Yamamuro <yamam...@apache.org>
Date: 2017-03-18T03:56:20Z
Use DDL strings for defining schema
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