Get a future which returns a map containing the underlying listing future for each broker
in the cluster. This is useful, for example, if a partial listing of transactions is
sufficient, or if you want more granular error details.
A future containing a map of futures by broker which complete individually when
their respective transaction listings are available. The top-level future returned
from this method may fail if the admin client is unable to lookup the available
brokers in the cluster.
Get all transaction listings in a map which is keyed by the ID of respective broker
that is currently managing them. If any of the underlying requests fail, then the future
returned from this method will also fail with the first encountered error.
A future containing a map from the broker ID to the transactions hosted by that
broker respectively. This future completes when all transaction listings are
available and fails after any non-retriable error.