Github user jerryshao commented on a diff in the pull request: https://github.com/apache/spark/pull/15377#discussion_r84212380 --- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala --- @@ -2432,6 +2432,26 @@ private[spark] object Utils extends Logging { } } +private[util] object CallerContext { + private def callerContextClassExists(): Boolean = { + try { + // scalastyle:off classforname + Class.forName("org.apache.hadoop.ipc.CallerContext") + Class.forName("org.apache.hadoop.ipc.CallerContext$Builder") + // scalastyle:on classforname + true + } catch { + case _ : ClassNotFoundException => false + } + } --- End diff -- The above code can be simplified with `Try { xxxx }.isSuccess`, please check `scala.util.Try`. Then these two methods can be merged into one expression.
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