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I have an application with multi-cluster binder that reads from one Kafka cluster and produces message to another Kafka cluster. At some point I started to receive such log messages:

1 --- [pool-2-thread-1] o.a.k.c.c.internals.ConsumerCoordinator : [Consumer clientId=consumer-some-10, groupId=some] The following partitions still have unstable offsets which are not cleared on the broker side: [topicName-14], this could be either transactional offsets waiting for completion, or normal offsets waiting for replication after appending to local log

I have other applications that read from that cluster too and topic too, but no such error provided. I have no access to producer for that topic, so I do not know if even transactions are used there. The question is, is it problem with messages that producer wrote, or may my consumer be slow to commmit offsets? Or it is just a broker issue?

本文标签: javaReceiving unstable offsets using Spring Cloud Kafka BinderStack Overflow