dajac commented on code in PR #15511:
URL: https://github.com/apache/kafka/pull/15511#discussion_r1524608939
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clients/src/main/java/org/apache/kafka/clients/consumer/internals/HeartbeatRequestManager.java:
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@@ -529,25 +530,18 @@ 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
- membershipManager.groupInstanceId().ifPresent(groupInstanceId -> {
- if (!groupInstanceId.equals(sentFields.instanceId) ||
membershipManager.memberEpoch() ==
ConsumerGroupHeartbeatRequest.LEAVE_GROUP_STATIC_MEMBER_EPOCH) {
- data.setInstanceId(groupInstanceId);
- sentFields.instanceId = groupInstanceId;
- }
- });
+ // InstanceId - always send when leaving the group as a static
member
+ membershipManager.groupInstanceId().ifPresent(data::setInstanceId);
- // RebalanceTimeoutMs - only sent if has changed since the last
heartbeat
- if (sentFields.rebalanceTimeoutMs != rebalanceTimeoutMs) {
+ // RebalanceTimeoutMs - only sent when joining
+ if (membershipManager.memberEpoch() == 0) {
Review Comment:
I had a second look at all this logic and I actually wonder if it is better
to keep the previous logic for rebalanceTimeoutMs and serverAssignor. My
concern is that we should actually send out a full request when `reset` has
been called and with the change it is not the case anymore. The main was the
send a full request when joining or on any errors (e.g. request timeout).
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