dajac commented on code in PR #17653:
URL: https://github.com/apache/kafka/pull/17653#discussion_r1827412960
##########
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/modern/consumer/ConsumerGroup.java:
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@@ -334,6 +342,13 @@ private void removeStaticMember(ConsumerGroupMember
oldMember) {
}
}
+ /**
+ * @return The number of members subscribed to the provided regex.
+ */
+ public int numSubscribedMembers(String regex) {
+ return subscribedRegularExpressions.getOrDefault(regex, 0);
+ }
Review Comment:
@jeffkbkim Yeah, the goal is to update the regex once for the entire group
if it is used by multiple members. This data structure helps to de-duplicate
for sure.
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