Can anyone clarify if this is a bug in Kafka or the expected behavior? Best regards, Wouter
On 30 January 2018 at 21:04, Wouter Bancken <wouter.banc...@aca-it.be> wrote: > Hi, > > I'm trying to write an external tool to monitor consumer lag on Apache > Kafka. > > For this purpose, I'm using the kafka-consumer-groups tool to fetch the > consumer offsets. > > When using this tool, partition assignments seem to be unavailable > temporarily during the creation of a new topic even if the consumer group > has no subscription on this new topic. This seems to match the > documentation > <https://cwiki.apache.org/confluence/display/KAFKA/Kafka+Client-side+Assignment+Proposal> > saying *"Topic metadata changes which have no impact on subscriptions > cause resync"*. > > However, when this occurs I'd expect the state of the consumer to be > "PreparingRebalance" or "AwaitingSync" but it is simply "Stable". > > Is this a bug in the tooling or is there a different way to obtain the > correct offsets for a consumer group during a rebalance? > > I'm using Kafka 10.2.1 but I haven't found any related issues in recent > changelogs. > Best regards, > Wouter >
