Philip Nee created KAFKA-15533:
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Summary: Ensure HeartbeatRequestManager only send out some fields
once
Key: KAFKA-15533
URL: https://issues.apache.org/jira/browse/KAFKA-15533
Project: Kafka
Issue Type: Bug
Reporter: Philip Nee
Assignee: Philip Nee
We want to ensure ConsumerGroupHeartbeatRequest is as lightweight as possible,
so a lot of fields in it don't need to be resend. An example would be the
rebalanceTimeoutMs, currently we have the following code:
{code:java}
ConsumerGroupHeartbeatRequestData data = new ConsumerGroupHeartbeatRequestData()
.setGroupId(membershipManager.groupId())
.setMemberEpoch(membershipManager.memberEpoch())
.setMemberId(membershipManager.memberId())
.setRebalanceTimeoutMs(rebalanceTimeoutMs); {code}
We should encapsulate these once-used fields into a class such as
HeartbeatMetdataBuilder, and it should maintain a state of whether a certain
field needs to be sent or not.
Note that, currently only 3 fields are mandatory in the request:
* groupId
* memberEpoch
* memberId
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