Github user carsonwang commented on a diff in the pull request: https://github.com/apache/spark/pull/17009#discussion_r102656311 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/ui/SQLListenerSuite.scala --- @@ -147,6 +147,10 @@ class SQLListenerSuite extends SparkFunSuite with SharedSQLContext with JsonTest checkAnswer(listener.getExecutionMetrics(0), accumulatorUpdates.mapValues(_ * 2)) + // Non-existing driver accumulator updates should be filtered and no exception will be thrown. --- End diff -- I was doing some own experiments that adds physical operators at runtime. The metrics of the added operators are not registered to the execution so I got a NoSuchElementException.
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