dajac commented on code in PR #13536:
URL: https://github.com/apache/kafka/pull/13536#discussion_r1162493978


##########
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." },

Review Comment:
   We need this in the case where the epoch bump does not reach the member. In 
this case, it will retry with the old epoch and we want to accept it.



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