Github user SparkQA commented on the issue: https://github.com/apache/spark/pull/18707 **[Test build #79976 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/79976/testReport)** for PR 18707 at commit [`55c6c37`](https://github.com/apache/spark/commit/55c6c37d09b41ae6914edb5d067e7f2c252ac92a). * This patch passes all tests. * This patch merges cleanly. * This patch adds the following public classes _(experimental)_: * ` throw new AnalysisException(s\"UDF class $className doesn't implement any UDF interface\")` * ` throw new AnalysisException(s\"It is invalid to implement multiple UDF interfaces, UDF class $className\")` * ` throw new AnalysisException(s\"UDF class with $n type arguments is not supported.\")` * ` throw new AnalysisException(s\"Can not instantiate class $className, please make sure it has public non argument constructor\")` * ` case e: ClassNotFoundException => throw new AnalysisException(s\"Can not load class $className, please make sure it is on the classpath\")`
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