vcrfxia commented on code in PR #13292:
URL: https://github.com/apache/kafka/pull/13292#discussion_r1127273827
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streams/src/main/java/org/apache/kafka/streams/processor/internals/InternalTopologyBuilder.java:
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@@ -1293,12 +1306,16 @@ private void setRegexMatchedTopicToStateStore() {
private <S extends StateStore> InternalTopicConfig
createChangelogTopicConfig(final StateStoreFactory<S> factory,
final String name) {
- if (factory.isWindowStore()) {
+ if (factory.isVersionedStore()) {
+ final VersionedChangelogTopicConfig config = new
VersionedChangelogTopicConfig(name, factory.logConfig());
+ config.setMinCompactionLagMs(factory.historyRetention());
Review Comment:
> Why are we setting this "outside" but not via the constructor? (I see that
we do the same thing for WindowedChangelogTopicConfig but I am not sure why
either.)
No reason, AFAICT -- I was just following precedent. Would you prefer
passing `factory.historyRetention()` into the constructor and setting it there?
I can refactor `WindowedChangelogTopicConfig` as well if so.
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