Server streaming methods are not properly marked as async

[Mariatta]

As found in https://github.com/googleapis/python-bigtable/pull/702/files#diff-cefca7c885a9bf43a6cc4769c788d30041fcffc582df926b7240e03beea308ebR529

In google/cloud/bigtable_v2/services/bigtable/async_client.py file, mutate_rows should become a coroutine. i.e. async def mutate_rows.

and the call to the rpc should be awaited. i.e. await rpc(...

[vchudnov-g]

@daniel-sanche Any insights on this? Is this still an issue for BigTable? Are there changes we should incorporate in the generated GAPICs?

[cindy-peng]

Hi

@daniel-sanche Any insights on this? Is this still an issue for BigTable? Are there changes we should incorporate in the generated GAPICs?

Hi Victor, Daniel is out of office today. He will be back next week and should be able to help investigate.

[daniel-sanche]

I remember discussing this with Mariatta long ago, and I thought we had closed this issue

The server streaming methods are implemented as a sync function that returns an async generator, rather than as an async generator function. But the end result works the same