shahidki31 opened a new pull request #23939: [SPARK-27019] [UI]onJobStart happens after onExecutionEnd shouldn't overwrite kvstore URL: https://github.com/apache/spark/pull/23939 ## What changes were proposed in this pull request? Currently, when the event reordering happens, especially onJobStart event come after onExecutionEnd event SQL page in the UI displays weirdly.(for eg:test mentioned in JIRA and also this issue randomly occurs when the TPCDS query fails due to broadcast time etc.) The reason is that, In the SQLAppstatusListener, we remove the liveExecutions entry once the execution ends. So, if a jobStart event come after that, then we create a new liveExecution entry corresponding to the execId. Eventually this will overwrite the kvstore and UI displays confusing entries. ## How was this patch tested? Added UT, Also manually tested with the eventLog of the failed query. Before fix:  After fix: 
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