HeartSaVioR commented on a change in pull request #25048: [SPARK-28247][SS] Fix 
flaky test "query without test harness" on ContinuousSuite 
URL: https://github.com/apache/spark/pull/25048#discussion_r301227669
 
 

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 File path: 
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/continuous/ContinuousRateStreamSource.scala
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 @@ -36,6 +38,9 @@ class RateStreamContinuousStream(rowsPerSecond: Long, 
numPartitions: Int) extend
 
   val perPartitionRate = rowsPerSecond.toDouble / numPartitions.toDouble
 
+  private[sql] val highestCommittedValue = new AtomicLong(Long.MinValue)
+  private[sql] val firstCommittedTime = new AtomicLong(Long.MinValue)
 
 Review comment:
   It would also require a new data source provider, as we just use it by the 
name of data source. 
   
   The change would bring the test version of RateStreamProvider, and test 
version of RateStreamTable (maybe subclassing to deduplicate), and test version 
of RateStreamContinuousStream. I'd like to confirm whether it's OK to apply the 
change since the changeset is going to be bigger.

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