hvanhovell commented on a change in pull request #27267: [SPARK-30556][SQL]
Copy sparkContext.localproperties to child thread
inSubqueryExec.executionContext
URL: https://github.com/apache/spark/pull/27267#discussion_r370089158
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/SQLExecution.scala
##########
@@ -164,4 +166,19 @@ object SQLExecution {
}
}
}
+
+ /**
+ * Wrap passed function to ensure necessary thread-local variables like
+ * SparkContext local properties are forwarded to execution thread
+ */
+ def withThreadLocalCaptured[T](sparkSession: SparkSession, exec:
ExecutionContext)(
+ body: => T): Future[T] = {
+ val activeSession = sparkSession
+ val localProps =
Utils.cloneProperties(sparkSession.sparkContext.getLocalProperties)
+ Future {
+ SparkSession.setActiveSession(activeSession)
Review comment:
I think we should restore them to their previous state. In this particular
case you can hold on to a SparkSession that is no longer in use.
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