Github user a-roberts commented on a diff in the pull request:
https://github.com/apache/spark/pull/6740#discussion_r32104008
--- Diff: core/src/main/scala/org/apache/spark/rdd/RDDOperationScope.scala
---
@@ -95,17 +95,17 @@ private[spark] object RDDOperationScope extends Logging
{
private[spark] def withScope[T](
sc: SparkContext,
allowNesting: Boolean = false)(body: => T): T = {
- val stackTrace = Thread.currentThread.getStackTrace().tail // ignore
"Thread#getStackTrace"
- val ourMethodName = stackTrace(1).getMethodName // i.e. withScope
- // Climb upwards to find the first method that's called something
different
- val callerMethodName = stackTrace
- .find(_.getMethodName != ourMethodName)
+
+ val callerMethodName = Thread.currentThread.getStackTrace()
+ .dropWhile(! _.getMethodName().equals("withScope"))
--- End diff --
The original code captures the stack trace within this method - at line 99,
this will always contain `withScope` as the code comment suggests (unless this
method name changes).
The new code is dropping elements in the stack trace until we see
`withScope` and follows the same logic henceforth.
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