Anybody has any inputs on this one? Sent from my iPhone
> On 25 May 2021, at 9:49 am, Neeraj Vaidya <neeraj.vai...@yahoo.co.in> wrote: > > Hi All, (I have asked this on SO as well, but happy to paste the response > there if I get a answer here or vice-versa). > > I would like to know the impact of setting both of these options on the > Producer API. > > Can someone please let me know why metadata has not expired in the Scenario-1 > even when metadata.max.age.ms has elapsed. > > Scenario-1 > ------------ > set metadata.max.age.ms to 10 seconds. > Leave metadata.max.idle.ms as default of 5 minutes. > start Kafka producer. publish some messages to a topic using this producer. > shutdown the Kafka cluster. > allow more than 10 seconds to elapse.----> I am hoping that this would cause > the producer to automatically trigger a request to update Metadata. > Now,try to produce a message to the topic using KafkaProducer#send from the > producer. > This operation returns immediately, without blocking. > I was expecting this to block as more than 10 seconds have elapsed and was > expecting metadata to expire based on the metadata.max.age.ms being set to 10 > seconds. > > Scenario-2 > ------------ > However, if do the following, then the KafkaProducer#send operation blocks : > set metadata.max.age.ms and metadata.max.idle.ms both to 10 seconds. > start Kafka producer > publish some messages to a topic using this producer. > shutdown the Kafka cluster. > allow more than 10 seconds to elapse. > try to produce a message to the topic using KafkaProducer#send from the > producer. > This operation blocks trying to fetch metadata. > I am not sure why it blocks now, but not in the first scenario.