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_r321040043
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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") {
Review comment:
> This test does not seem to be testing Spark code? I don't understand.
If no exception is thrown, it will run into line 938 `assert(false)` and
this test will not pass. But it always go into `catch`, throw
`ClassCastException `, so this test pass. Actually, i am not sure is it issue
for others.
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