Hangleton commented on code in PR #13493:
URL: https://github.com/apache/kafka/pull/13493#discussion_r1165606409
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core/src/main/scala/kafka/coordinator/group/GroupMetadata.scala:
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@@ -824,14 +823,14 @@ private[group] class GroupMetadata(val groupId: String,
initialState: GroupState
expiredOffsets
}
- def allOffsets: Map[TopicPartition, OffsetAndMetadata] = offsets.map { case
(topicPartition, commitRecordMetadataAndOffset) =>
- (topicPartition, commitRecordMetadataAndOffset.offsetAndMetadata)
+ def allOffsets: Map[TopicIdPartition, OffsetAndMetadata] = offsets.map {
case (topicPartition, commitRecordMetadataAndOffset) =>
+ (new TopicIdPartition(Uuid.ZERO_UUID, topicPartition),
commitRecordMetadataAndOffset.offsetAndMetadata)
Review Comment:
Hi Justine (@jolshan), I pushed a commit with the change to resolve the
topic id in the group metadata manager when the offsets of all topic-partitions
known by the coordinator are requested. I don't really like the code I wrote
since it introduces one level of indirection on the valid path and one more
failure path when a topic id cannot be resolved. And the implementation
proposed is not very elegant. But it follows up on the discussion above.
When the new schemas for metadata and offset records are used, the topic id
will be taken from the record tag. However for all existing records, there will
still be a need for reconciliation. Perhaps this reconciliation should be done
when the offsets are loaded by the coordinator once the metadata data structure
become topic-id-aware.
I will add a few more unit tests.
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