Extract value from streaming Dataframe to a variable

[Nick Dawes]

I need to extract a value from a PySpark structured streaming Dataframe to
a string variable to check something.

I tried this code.

agentName =
kinesisDF.select(kinesisDF.agentName.getItem(0).alias("agentName")).collect()[0][0]

This works on a non-streaming Dataframe only. In a streaming Dataframe,
collect is not supported.

Any workaround for this?

Nick