Hi Lud, The topics for which you're seeing under replicated partitions, Did you try to increase the number of partitions anytime after creation of those topics before the upgrade?
We have earlier faced issues with 2.8.0, in which we had increased the number of partitions for some topics, and for those topics we used to see under replicated partitions after every restart. The reason this happened was, there was a bug in Kafka which assigned a new topicId (different from the original topicId) to newly added partitions in the partition.metadata file, and upon restart of kafka brokers, this topicId didn't reconcile between brokers and ZK. Thanks, Megh On Thu, Nov 30, 2023, 20:10 Lud Antonie <lud.anto...@coosto.com.invalid> wrote: > Hello, > > After upgrading from 2.7.2 to 3.5.1 some topics are missing a partition for > one or two brokers. > The kafka manager shows "Under replicated%" for the topic. > Looking at the topic for some brokers (of 3) partitions are missing (in my > case 1 partition). > A rollback will restore the "Under replicated%" to 0 again (this is the > wanted number). > > Is this a bug of kafka or the kafka manager? > > Best regards, > Lud Antonie > > > -- > Met vriendelijke groet / Kind regards, > > *Lud Antonie* > > <https://www.coosto.com/> > Kennedyplein 101, 5611 ZS, Eindhoven > +31(0)402492700 <0031402492700> > www.coosto.com > <https://twitter.com/CoostoNL> <https://www.facebook.com/coosto.solution> > <https://www.instagram.com/coosto_com/> > <https://www.linkedin.com/company/coosto> >
