Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/13607#discussion_r66712579
--- Diff: project/SparkBuild.scala ---
@@ -833,7 +833,7 @@ object TestSettings {
javaOptions in Test += "-Dspark.ui.enabled=false",
javaOptions in Test += "-Dspark.ui.showConsoleProgress=false",
javaOptions in Test += "-Dspark.unsafe.exceptionOnMemoryLeak=true",
- javaOptions in Test += "-Dsun.io.serialization.extendedDebugInfo=true",
+ javaOptions in Test +=
"-Dsun.io.serialization.extendedDebugInfo=false",
--- End diff --
hm this has been very useful in debugging when we encounter
non-serializable exceptions.
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