Return a sequence of (brokerId, numPartitions).
Return a sequence of (brokerId, numPartitions).
the topic for which this information is to be returned
a sequence of (brokerId, numPartitions). Returns a zero-length sequence if no brokers are available.
It updates the cache by issuing a get topic metadata request to a random broker.
It updates the cache by issuing a get topic metadata request to a random broker.
the topics for which the metadata is to be fetched