Hi guys, I’m trying to consume from __consumer_offsets topic to get exact committed offset of each consumer. Normally I can see messages like:
[eds-els-recopp-jenkins-01-5651,eds-incre-staging-1,0]::[OffsetMetadata[29791925,NO_METADATA],CommitTime 1487090167367,ExpirationTime 1487176567367], which make sense to me. But sometimes I see messages like: [eds-elssearchindex-curiosity-stg-10892,eds-incre-v2-staging-els,0]::NULL. Can someone explains what is NULL means here and why a NULL value get published to __consumer_offsets? We’re running kafka 0.9.0.1 and we use org.apache.kafka.common.serialization.ByteArrayDeserializer and GroupMetadataManager.OffsetsMessageFormatter to parse the message. Thanks, Jun
