Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/19977
**[Test build #84953 has
finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/84953/testReport)**
for PR 19977 at commit
[`b5fe52c`](https://github.com/apache/spark/commit/b5fe52cde22c241aa11a02d7353d27bbba0c047b).
* This patch **fails Spark unit tests**.
* This patch merges cleanly.
* This patch adds the following public classes _(experimental)_:
* ` class FunctionArgumentConversion(conf: SQLConf) extends
TypeCoercionRule `
* `case class Concat(children: Seq[Expression], isBinaryMode: Boolean =
false)`
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