UnavailableProducerException
UnknownMagicByteException
UnknownTopicOrPartitionCode
UnknownTopicOrPartitionException
uncleanLeaderElectionRate
underReplicatedPartitionCount
updateAssignedReplicasForPartition
updateLeaderHWAndMaybeExpandIsr
updateMetadataResponseCallback
updateMetadataResponseCbk
updatePartitionReassignmentData