lianetm commented on code in PR #15519:
URL: https://github.com/apache/kafka/pull/15519#discussion_r1521497910
##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/HeartbeatRequestManager.java:
##########
@@ -529,10 +529,9 @@ public ConsumerGroupHeartbeatRequestData
buildRequestData() {
// MemberEpoch - always sent
data.setMemberEpoch(membershipManager.memberEpoch());
- // InstanceId - only sent if has changed since the last heartbeat
- // Always send when leaving the group as a static member
+ // InstanceId - send when leaving the group as a static member
membershipManager.groupInstanceId().ifPresent(groupInstanceId -> {
- if (!groupInstanceId.equals(sentFields.instanceId) ||
membershipManager.memberEpoch() ==
ConsumerGroupHeartbeatRequest.LEAVE_GROUP_STATIC_MEMBER_EPOCH) {
+ if (membershipManager.memberEpoch() ==
ConsumerGroupHeartbeatRequest.LEAVE_GROUP_STATIC_MEMBER_EPOCH) {
data.setInstanceId(groupInstanceId);
sentFields.instanceId = groupInstanceId;
Review Comment:
Agree we could simplify and remove the `instanceId` from the `sentFields`
like @chia7712 suggested. I don't see the need to track it as it's not
something that will change and we just simply need to send the value we have.
##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/HeartbeatRequestManager.java:
##########
@@ -529,10 +529,9 @@ public ConsumerGroupHeartbeatRequestData
buildRequestData() {
// MemberEpoch - always sent
data.setMemberEpoch(membershipManager.memberEpoch());
- // InstanceId - only sent if has changed since the last heartbeat
- // Always send when leaving the group as a static member
+ // InstanceId - send when leaving the group as a static member
membershipManager.groupInstanceId().ifPresent(groupInstanceId -> {
Review Comment:
Agree, the current coordinator expectation seems to me like the right thing
to do, and we should send the `groupInstanceId` all the time (in the same way
that we send the `memberId` all the time).
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