Hi Michał, I think you want to check the term in Kafka: In Sync Replicas (a.k.a ISR). You might want to check the "Replication" section in doc here <https://kafka.apache.org/documentation/#replication>.
The configuration is this one: *replica.lag.time.max.ms <http://replica.lag.time.max.ms>* https://kafka.apache.org/documentation/#brokerconfigs_replica.lag.time.max.ms Hope that helps. Thank you. Luke On Mon, Sep 20, 2021 at 8:30 PM Michał Łowicki <mlowi...@gmail.com> wrote: > Hey, > > When Java client is reading from replica then how is handled the case when > such replica starts to lag? (struggles to replicate data from the leader). > Does consumer, coordinator or group leader have any logic to detect such > cases and try to switch over to other replica in those cases? (pointers to > code, configuration options would be awesome). Thanks in advance. > > -- > BR, > Michał Łowicki >