dongjoon-hyun commented on code in PR #39268:
URL: https://github.com/apache/spark/pull/39268#discussion_r1061935560
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/SQLExecution.scala:
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@@ -55,6 +56,28 @@ object SQLExecution {
}
}
+ /**
+ * Track the "root" SQL Execution Id for nested/sub queries.
+ * For the root execution, rootExecutionId == executionId.
+ */
+ private def setRootExecutionId(sc: SparkContext, executionId: String): Unit
= {
+ // The current execution is the root execution if the root execution ID is
null
+ if (sc.getLocalProperty(EXECUTION_ROOT_ID_KEY) == null) {
+ sc.setLocalProperty(EXECUTION_ROOT_ID_KEY, executionId)
+ }
+ }
+
+ /**
+ * Unset the "root" SQL Execution Id once the "root" SQL execution completes.
+ */
+ private def unsetRootExecutionId(sc: SparkContext, executionId: String):
Unit = {
Review Comment:
This method is also misleading because we set `EXECUTION_ROOT_ID_KEY` to
null only when it's equal to `executionId`.
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