joechen8...@gmail.com created KAFKA-7318: --------------------------------------------
Summary: Should introduce a offset reset policy to consume only the messages after subscribing Key: KAFKA-7318 URL: https://issues.apache.org/jira/browse/KAFKA-7318 Project: Kafka Issue Type: Improvement Components: consumer Affects Versions: 2.0.0, 1.1.1, 1.1.0 Reporter: joechen8...@gmail.com On our situation, we want the consumers only consume the messages which was produced after subscribing. Currently, kafka support 3 policies with auto.offset.reset, but seems both of them can not support the feature we want. * {{latest}} (the default) , if a consumer subscribe a new topic and then close, during these times, there are some message was produced, the consumer can not poll these messages. * earliest , consumer may consume all the messages on the topic before subscribing. * none, not in this scope. Before version 1.1.0, we make the consumer poll and commit after subscribe as below, this can mark the offset to 0 and works (enable.auto.commit is false) . {code:java} consumer.subscribe(topics, consumerRebalanceListener); if(consumer.assignment().isEmpty()) { consumer.poll(0); consumer.commitSync(); } {code} After upgrade the clients to >=1.1.0, it is broke. Seems it was broke by the fix [KAFKA-6397|https://github.com/apache/kafka/commit/677881afc52485aef94150be50d6258d7a340071#diff-267b7c1e68156c1301c56be63ae41dd0], but I am not sure about that. Then I try to invoke the consumer.position(partitions) in onPartitionsAssigned of ConsumerRebalanceListener, it works again. but it looks strangely that get the position but do nothing. so we want to know whether there is a formal way to do this, maybe introduce another policy for auto.offset.reset to only consume the message after the consumer subscribing is perfect. -- This message was sent by Atlassian JIRA (v7.6.3#76005)