HeartSaVioR commented on a change in pull request #29372:
URL: https://github.com/apache/spark/pull/29372#discussion_r466791994



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File path: 
sql/core/src/main/scala/org/apache/spark/sql/execution/QueryExecution.scala
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@@ -54,6 +54,8 @@ class QueryExecution(
     val logical: LogicalPlan,
     val tracker: QueryPlanningTracker = new QueryPlanningTracker) extends 
Logging {
 
+  val id: UUID = UUID.randomUUID()

Review comment:
       I guess you meant using monotonically incremental long value; yes that 
would also work. Will update. 




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