AndrewJSchofield commented on code in PR #20819:
URL: https://github.com/apache/kafka/pull/20819#discussion_r2498118425
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core/src/main/scala/kafka/server/KafkaApis.scala:
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@@ -4182,6 +4195,19 @@ class KafkaApis(val requestChannel: RequestChannel,
config.shareGroupConfig.isShareGroupEnabled ||
shareVersion().supportsShareGroups
}
+ /**
+ * This function checks if the member id passed from the client in KIP-932
related RPCs is valid or not. We disallow
+ * empty strings since group coordinator disallows it. We also disallow
Uuid.ZERO_UUID ("AAAAAAAAAAAAAAAAAAAAAA")
Review Comment:
Why can we not use the empty string `""` as an empty member ID in
SharePartition? I don't see the point in reserving this single strange value.
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