Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/20817
**[Test build #88224 has
finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/88224/testReport)**
for PR 20817 at commit
[`b7bce25`](https://github.com/apache/spark/commit/b7bce25f83622c4adb97dd03e7414811770d7d4d).
* This patch **fails Spark unit tests**.
* This patch merges cleanly.
* This patch adds the following public classes _(experimental)_:
* `case class RandomUUIDGenerator(random: Random) `
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