Source thrift file about databricks-sql-python

[susodapop]

You are correct that our .thrift file is not present in this repo nor any of our other OSS Thrift-based connectors. Databricks have not chosen to open source it at this time.

Are you blocked by not having this file? How so?

[alex-davies]

That is disappointing that they have decided not to open source the contract

I was actually trying to write a similar library to this but for dotnet. This repo was being used as inspiration to how it can be done. I was using the hive projects thrift file for generation but it has issues connecting to sql warehouse instances (although connects to other clusters fine).

Sounds like what I was trying to do is not really possible until databricks shares the thrift file or they develop their own dotnet native connector

[susodapop]

Thanks for that context.

You can use the open source Hive thrift definition to interact with Databricks because the Databricks runtime is backwards compatible with it. But you're right that trying to implement the same features as our OSS connectors that were developed post-fork will be impossible without access to our Thrift contract. I've drawn attention to this with my team, which maintains all our OSS connectors (currently for Python, Node, and Go).

To connect with Databricks from C#, I think your best bet is to connect using our ODBC driver and the C# ODBC tooling.

I'm going to keep your issue closed on this repository since it's not relevant for Python development. But this is an ongoing discussion for us internally and you are welcome to respond here or ping my @ if you need. Thanks for starting this discussion.

[rxin]

@alex-davies we are actually going to release a new REST API with well documented interfaces very soon, and then we will transition all the connectors to that new API. If you can just wait a little bit, we'd love to work with you to get a dotnet version based on that new API.

[skitscha]

@susodapop @rxin Are you guys still going to move the connectors over to the rest api? I would also like to make a databricks connector in C#. The ODBC driver is not easy to configure if you are running your application in a container. Would it be possible for you guys to generate the thift files in dotnet and check them into a repo so that I can make a dotnet connector for databricks? It would be ideal if I could implement using the IDbConnection so I could use like any other data source in dotnet.

[jadewang-db]

https://github.com/apache/arrow-adbc/tree/main/csharp/src/Drivers/Apache/Spark this is an .net ADBC driver against thrift under development.