Hi, I just noticed that in KAFKA-1650 (which is before we use KIP) we added an offset commit method in high level consumer that commits offsets using a user provided offset map.
public void commitOffsets(Map<TopicPartition, OffsetAndMetadata> offsetsToCommit, boolean retryOnFailure); This method was added to all the Scala classes but I forgot to add it to Java API of ConsumerConnector. (Already regretting now. . .) This method is very useful in several cases and has been asked for from time to time. For example, people have several threads consuming messages and processing them. Without this method, one thread will unexpectedly commit offsets for another thread, thus might lose some messages if something goes wrong. I created KAFKA-2186 and hope we can add this missing method into the Java API of old high level consumer (literarily one line change). Although this method should have been there since KAFKA-1650, adding this method to Java API now is a public API change, just want to see if people think we need a KIP for this. Thanks. Jiangjie (Becket) Qin
