Github user weiqingy commented on the issue: https://github.com/apache/spark/pull/15377 @lins05 Maybe something like this: ``` test("Set Spark CallerContext") { val context = "test" try { new CallerContext(context).setCurrentContext() val callerContext = Utils.classForName("org.apache.hadoop.ipc.CallerContext") assert(CallerContext.callerContextSupported) assert(s"SPARK_$context" === callerContext.getMethod("getCurrent").invoke(null).toString) } catch { case e: ClassNotFoundException => assert(!CallerContext.callerContextSupported) } } ```
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