hddong commented on a change in pull request #25389: [SPARK-28657][CORE] Fix
currentContext Instance failed sometimes
URL: https://github.com/apache/spark/pull/25389#discussion_r320541496
##########
File path: core/src/test/scala/org/apache/spark/util/UtilsSuite.scala
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@@ -924,6 +926,24 @@ class UtilsSuite extends SparkFunSuite with
ResetSystemProperties with Logging {
}
}
+ test("test class ClassCastException") {
+ // CallerContext added after hadoop-2.8.0 for HDFS-9184
+ if (VersionInfo.getVersion >= "2.8") {
+ try {
+ val callerContext =
Utils.classForName("org.apache.hadoop.ipc.CallerContext")
+ val builder =
Utils.classForName("org.apache.hadoop.ipc.CallerContext$Builder")
+ val builderInst =
builder.getConstructor(classOf[String]).newInstance("test")
+ val hdfsContext = builder.getMethod("build").invoke(builderInst)
+ callerContext.getMethod("setCurrent", callerContext).invoke(null,
hdfsContext)
+ assert(false)
+ } catch {
+ case NonFatal(e) =>
+ assert(e.toString == "java.lang.ClassCastException: " +
+ "org.apache.hadoop.ipc.CallerContext$Builder cannot be cast to
scala.runtime.Nothing$")
+ }
+ }
Review comment:
@AngersZhuuuu @dongjoon-hyun
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