jolshan commented on code in PR #15155: URL: https://github.com/apache/kafka/pull/15155#discussion_r1447907424
########## group-coordinator/src/main/java/org/apache/kafka/coordinator/group/OffsetMetadataManager.java: ########## @@ -195,6 +196,11 @@ public OffsetMetadataManager build() { */ private final TimelineHashMap<Long, Offsets> pendingTransactionalOffsets; + /** + * The open transactions (producer ids) keyed by group. + */ + private final TimelineHashMap<String, TimelineHashSet<Long>> openTransactionsByGroup; Review Comment: Sorry -- I left a lot of words here. Is there a time where we take advantage of the data structure? Ie using the epoch/rolling back? I didn't see any in this PR. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org