GitHub user maropu opened a pull request:
https://github.com/apache/spark/pull/18768
[SPARK-21533][SQL] Print warning messages when override function
`configure` found in Hive UDFs
## What changes were proposed in this pull request?
This pr added code to print warning messages when an unsupported function
`public void configure(MapredContext mapredContext)` used in `GenericUDF` and
`GenericUDF`. This is because Spark does not call `configure` internally and
this is error-prone.
## How was this patch tested?
Manually checked. If this pr applied, you hit a warning message below;
```
scala> sql("CREATE TEMPORARY FUNCTION test AS 'test.TestUDTF'")
17/07/29 11:57:08 WARN HiveShim: Found an overridden method `configure` in
TestUDTF, but Spark does not call the method during initialization because
Spark does not use MapredContext inside (See SPARK-21533). So, you might
reconsider the implementation of TestUDTF.
```
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/maropu/spark SPARK-21533
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18768.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 #18768
----
commit ff1b88be6095da4a4628134691ebfc05876bc83b
Author: Takeshi Yamamuro <yamam...@apache.org>
Date: 2017-07-29T03:01:34Z
Print warning messages when override function `configure` found
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