[GitHub] [kafka] Hangleton commented on a diff in pull request #13511: KAFKA-14869: Ignore unknown record types for coordinators (KIP-915, Part-1)

["Hangleton (via GitHub)" <gi...@apache.org>]

Hangleton commented on code in PR #13511:
URL: https://github.com/apache/kafka/pull/13511#discussion_r1168339962


##########
core/src/test/scala/unit/kafka/coordinator/group/GroupMetadataManagerTest.scala:
##########
@@ -640,8 +640,14 @@ class GroupMetadataManagerTest {
     val offsetCommitRecords = createCommittedOffsetRecords(committedOffsets)
     val memberId = "98098230493"
     val groupMetadataRecord = buildStableGroupRecordWithMember(generation, protocolType, protocol, memberId)
+
+    // Should ignore unknown record
+    val unknownKey = new org.apache.kafka.coordinator.group.generated.GroupMetadataKey()
+    val unknownMessage = MessageUtil.toVersionPrefixedBytes(Short.MaxValue, unknownKey)
+    val unknownRecord = new SimpleRecord(unknownMessage, unknownMessage)
+
     val records = MemoryRecords.withRecords(startOffset, CompressionType.NONE,
-      (offsetCommitRecords ++ Seq(groupMetadataRecord)).toArray: _*)
+      (offsetCommitRecords ++ Seq(unknownRecord) ++ Seq(groupMetadataRecord)).toArray: _*)

Review Comment:
   Nit: maybe we could have a test with a few more unknown records in the list with different version.



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