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| author | hyukjinkwon <gurwls223@gmail.com> | 2017-01-11 21:03:48 -0800 |
|---|---|---|
| committer | gatorsmile <gatorsmile@gmail.com> | 2017-01-11 21:03:48 -0800 |
| commit | 24100f162dadb80400cb3e0bc94e4282f10f0c84 (patch) | |
| tree | 3617b0da24f1f87a00944f7eb4b627278425d98b /assembly/pom.xml | |
| parent | 43fa21b3e62ee108bcecb74398f431f08c6b625c (diff) | |
| download | spark-24100f162dadb80400cb3e0bc94e4282f10f0c84.tar.gz spark-24100f162dadb80400cb3e0bc94e4282f10f0c84.tar.bz2 spark-24100f162dadb80400cb3e0bc94e4282f10f0c84.zip | |
[SPARK-16848][SQL] Check schema validation for user-specified schema in jdbc and table APIs
## What changes were proposed in this pull request?
This PR proposes to throw an exception for both jdbc APIs when user specified schemas are not allowed or useless.
**DataFrameReader.jdbc(...)**
``` scala
spark.read.schema(StructType(Nil)).jdbc(...)
```
**DataFrameReader.table(...)**
```scala
spark.read.schema(StructType(Nil)).table("usrdb.test")
```
## How was this patch tested?
Unit test in `JDBCSuite` and `DataFrameReaderWriterSuite`.
Author: hyukjinkwon <gurwls223@gmail.com>
Closes #14451 from HyukjinKwon/SPARK-16848.
Diffstat (limited to 'assembly/pom.xml')
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