TopicAdmin
Describes and creates the topics of a broker: the port the runtime validates and creates a node's topics through at its start, as wow.kafka.ddl says. Neither call creates a topic as a side effect of asking about it.
partitions gives the partition count of each of topics that exists; one that does not is left out.
create creates each topic of topics with its partition count, the broker's replication and topic settings being the implementation's; a topic that exists already, such as one another node created at the same moment, is left as it is. It returns once the created topics can be described.