dajac commented on code in PR #13536:
URL: https://github.com/apache/kafka/pull/13536#discussion_r1162495603
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group-coordinator/src/main/resources/common/message/ConsumerGroupCurrentMemberAssignmentValue.json:
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@@ -22,16 +22,29 @@
"fields": [
{ "name": "MemberEpoch", "versions": "0+", "type": "int32",
"about": "The member epoch." },
+ { "name": "PreviousMemberEpoch", "versions": "0+", "type": "int32",
+ "about": "The previous member epoch." },
+ { "name": "TargetMemberEpoch", "versions": "0+", "type": "int32",
+ "about": "The target member epoch." },
Review Comment:
We need this in order to know what was the assignment epoch used to compute
the assigned partitions, etc. When if diverges with the current assignment
epoch, we know that we need to recompute the assignment.
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