dajac commented on code in PR #14271:
URL: https://github.com/apache/kafka/pull/14271#discussion_r1307484913
##########
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/GroupCoordinatorService.java:
##########
@@ -426,9 +429,43 @@ public CompletableFuture<ListGroupsResponseData>
listGroups(
return
FutureUtils.failedFuture(Errors.COORDINATOR_NOT_AVAILABLE.exception());
}
- return FutureUtils.failedFuture(Errors.UNSUPPORTED_VERSION.exception(
- "This API is not implemented yet."
- ));
+ List<CompletableFuture<ListGroupsResponseData>> futures = new
java.util.ArrayList<>(Collections.emptyList());
+ for (int i = 0; i < numPartitions; i++) {
+ futures.add(runtime.scheduleReadOperation("list_groups",
+ new TopicPartition(Topic.GROUP_METADATA_TOPIC_NAME, i),
+ (coordinator, __) -> coordinator.listGroups(context,
request)
Review Comment:
Basically
[here](https://github.com/apache/kafka/pull/14271/files#diff-00f0f81cf13e66781777d94f7d2e68a581663385c37e98792507f2294c91bb09R418),
you need to use `lastCommittedOffset` to ensure that you only read committed
state. I don't know if we support the Stream API but the other APIs should
accept an argument called `epoch`. You can use `lastCommittedOffset` as the
`epoch.`
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