dnishimura commented on a change in pull request #918: SAMZA-2094: Implement the StartpointVisitor for the KafkaSystemConsumer. URL: https://github.com/apache/samza/pull/918#discussion_r260538851
########## File path: samza-core/src/main/scala/org/apache/samza/system/SystemConsumers.scala ########## @@ -208,7 +223,11 @@ class SystemConsumers ( if (startpoint != null) { consumer.register(systemStreamPartition, startpoint) } else { - consumer.register(systemStreamPartition, offset) + val existingOffset = sspToRegisteredOffsets.get(systemStreamPartition) + val systemAdmin = systemAdmins.getSystemAdmin(systemStreamPartition.getSystem) + if (existingOffset == null || systemAdmin.offsetComparator(existingOffset, offset) > 0) { + sspToRegisteredOffsets.put(systemStreamPartition, offset) Review comment: Adding to @cameronlee314's comment. What's the motivation for only accepting the older offset if `register` is called multiple times? When would this happen? Is it the broadcast stream scenario? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services