A producer is sending messages with null key to a topic with 6 partitions using the DefaultPartitioner. Where will the messages be stored?
Answer(s): A
Message with no keys will be stored with round-robin strategy among partitions.
A topic has three replicas and you set min.insync.replicas to 2. If two out of three replicas are not available, what happens when a consume request is sent to broker?
With this configuration, a single in-sync replica is still readable, but not writeable if the producer using acks=all
In Avro, removing a field that does not have a default is aschema evolution
Answer(s): C
Clients with new schema will be able to read records saved with old schema.
An ecommerce website maintains two topics - a high volume "purchase" topic with 5 partitions and low volume "customer" topic with 3 partitions. You would like to do a stream-table join of these topics. How should you proceed?
In case of KStream-KStream join, both need to be co-partitioned. This restriction is not applicable in case of join with GlobalKTable, which is the most efficient here.
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