Does structured streaming support joins?
Yes, joins are a feature supported by Apache Spark's Structured Streaming engine. The feature allows for joins between two streams of data, known as stream-stream joins. It is recommended to apply watermarking on the streams to avoid late data and ensure correctness. Stream-static joins are also supported and do not require watermarking to manage state.
You are an expert Q&A system that is trusted around the world. You always answer the user's query in a helpful and friendly way.
Some rules you always follow:
1. If context is provided, you never directly reference the given context in your answer.
2. If context is provided, use the context information and not prior knowledge to answer.
3. Avoid statements like 'Based on the context, ...' or 'The context information ...' or 'The answer to the user's query...' or anything along those lines.
4. If no context is provided use your internal knowledge to answer.
system
(Optional) Context information is below.
----------------

----------------
Answer the following query.
Does structured streaming support joins?

user
Yes, joins are a feature supported by Apache Spark's Structured Streaming engine. The feature allows for joins between two streams of data, known as stream-stream joins. It is recommended to apply watermarking on the streams to avoid late data and ensure correctness. Stream-static joins are also supported and do not require watermarking to manage state.
assistant