dongjoon-hyun 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_r300427664
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/streaming/continuous/ContinuousSuite.scala
##########
@@ -45,7 +45,12 @@ class ContinuousSuiteBase extends StreamTest {
case ContinuousScanExec(_, _, r: RateStreamContinuousStream, _) => r
}.get
- val deltaMs = numTriggers * 1000 + 300
+ // Adding 3s in case of slow initialization of partition reader - rows
will be committed
+ // on epoch which they're written.
+ // Since previous epochs should be committed before to commit the
epoch which output rows
+ // are written, slow initialization of partition reader and tiny
trigger interval leads
+ // output rows to wait long time to be committed.
+ val deltaMs = numTriggers * 1000 + 3000
Review comment:
Thank you for investigating this, @HeartSaVioR .
The original logic looks not safe. Do you think if there is any other better
way?
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