vcrfxia commented on code in PR #13656:
URL: https://github.com/apache/kafka/pull/13656#discussion_r1183071555
##########
streams/src/test/java/org/apache/kafka/streams/tests/StreamsUpgradeTest.java:
##########
@@ -143,6 +173,94 @@ private static void buildFKTable(final KStream<String,
Integer> primaryTable,
kStream.to("fk-result", Produced.with(stringSerde, stringSerde));
}
+ private static void buildTableAgg(final KTable<String, Integer>
sourceTable,
+ final String aggProduceValue,
+ final List<String> expectedAggValues) {
+ final KStream<Integer, String> result = sourceTable
+ .groupBy(
+ (k, v) -> new KeyValue<>(v, aggProduceValue),
+ Grouped.with(intSerde, stringSerde))
+ .aggregate(
+ () -> new Agg(Collections.emptyList(), 0),
+ (k, v, agg) -> {
+ final List<String> seenValues;
+ final boolean updated;
+ if (!agg.seenValues.contains(v)) {
+ seenValues = new ArrayList<>(agg.seenValues);
+ seenValues.add(v);
+ Collections.sort(seenValues);
+ updated = true;
+ } else {
+ seenValues = agg.seenValues;
+ updated = false;
+ }
+
+ final boolean shouldLog = updated || (agg.recordsProcessed
% 10 == 0); // value of 10 is chosen for debugging purposes. can increase to
100 once test is passing.
+ if (shouldLog) {
Review Comment:
Ah, must've put that in for debugging and forgotten to leave a note. The new
mechanism makes sense 👍 If you think `recordsProcessed % 10` is the right
frequency, rather than `recordsProcessed % 100`, then perhaps we can remove the
comment entirely and just leave it as `recordsProcessed % 10`.
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