double quota is automaticly added when sinking as csv

We use struct streaming 2.2, when sinking as csv, a json str will automatic add "" for it, like an element is > > {"hello": "world"} result data in fs will be > "{\"hello\": \"world\"}" How to avoid the "",we only want > {"hello": "world"} code like > resultDS. > writeStream. >

How to add a new source to exsting struct streaming application, like a kafka source

How to add a new source to exsting struct streaming application, like a kafka source