GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/21938
[SPARK-24982][SQL] UDAF resolution should not throw AssertionError
## What changes were proposed in this pull request?
When user calls anUDAF with the wrong number of arguments, Spark previously
throws an AssertionError, which is not supposed to be a user-facing exception.
This patch updates it to throw AnalysisException instead.
## How was this patch tested?
Updated test case udaf.sql.out.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-24982
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21938.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 #21938
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commit 84262dc21dd9f9aa409dd5e873d31d5b26a231f3
Author: Reynold Xin <rxin@...>
Date: 2018-07-31T21:00:20Z
[SPARK-24982][SQL] UDAF resolution should not throw java.lang.AssertionError
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