UnavailableProducerException
uncleanLeaderElectionRate
underReplicatedPartitionCount
UnknownMagicByteException
UnknownTopicOrPartitionCode
UnknownTopicOrPartitionException
updateAssignedReplicasForPartition
updateLeaderHWAndMaybeExpandIsr
updateMetadataResponseCallback
updateMetadataResponseCbk
updatePartitionReassignmentData