Location information for a specific key-range of a sharded
computation. Currently we only support UTF-8 character splits to
simplify encoding into JSON.
start The start (inclusive) of the key range.
end The end (exclusive) of the key range.
delivery_endpoint The physical location of this range
assignment to be used for streaming computation
cross-worker message delivery.
data_disk The name of the data disk where data for this
range is stored. This name is local to the
Google Cloud Platform project and uniquely
identifies the disk within that project, for
deprecated_persistent_directory DEPRECATED. The location of the persistent
state for this range, as a persistent directory
in the worker local filesystem.