Github user shaoxuan-wang commented on a diff in the pull request: https://github.com/apache/flink/pull/3470#discussion_r104301347 --- Diff: flink-libraries/flink-table/src/test/scala/org/apache/flink/table/functions/aggfunctions/AggFunctionTestBase.scala --- @@ -36,14 +36,23 @@ abstract class AggFunctionTestBase[T] { def aggregator: AggregateFunction[T] + def ifSupportRetraction: Boolean = true + @Test - // test aggregate functions without partial merge - def testAggregateWithoutMerge(): Unit = { + // test aggregate and retract functions without partial merge + def testAccumulateAndRetractWithoutMerge(): Unit = { // iterate over input sets for ((vals, expected) <- inputValueSets.zip(expectedResults)) { - val accumulator = aggregateVals(vals) - val result = aggregator.getValue(accumulator) + val accumulator = accumulateVals(vals) + var result = aggregator.getValue(accumulator) validateResult(expected, result) + + if (ifSupportRetraction) { + retractVals(accumulator, vals) --- End diff -- Sounds good to me. I prefer to apply merge with retraction, will add the tests.
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---