Apache Arrow Flight API

Apache Arrow Flight API

Apache Arrow wraps a huge ecosystem of projects, just like UStore. With standardized Arrow columnar in-memory representations any content can be exported into analytics engine of your choosing.

The Flight API pushes this interoperability to the next level. Think of it as a binary analytics alternative to REST. We implement the Flight “verbs” and “actions”, so you don’t even need to use our SDKs to inject or retrieve the data.

Verb	Direction	Call Examples
Put	data in, nothing out	write
Read	nothing in, data out	list_collections
Exchange	data in, data out	read, scan, measure
Action		create_collection, remove_collection, begin_transaction, commit_transaction

Argument names for all the functions match those of the C standard itself. Scalar arguments can form URI-like parameter packs, separated by &. Example:

read?collection_name=favourites&transaction_id=abcdabcd&dont_watch

The payload will contain a single column table of keys.