Lukáš created SPARK-36984:
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Summary: Misleading Spark Streaming source documentation
Key: SPARK-36984
URL: https://issues.apache.org/jira/browse/SPARK-36984
Project: Spark
Issue Type: Documentation
Components: Documentation, PySpark, Structured Streaming
Affects Versions: 3.1.2, 3.1.1, 3.1.0, 3.0.3, 3.0.2, 3.0.1
Reporter: Lukáš
The documentation at
[https://spark.apache.org/docs/latest/streaming-programming-guide.html#advanced-sources]
clearly states that *Kafka* (and Kinesis) are available in the Python API v
3.1.2 in *Spark Streaming (DStreams)*.
However, there is no way to create DStream from Kafka in PySpark >= 3.0.0, as
the `kafka.py` file is missing in
[https://github.com/apache/spark/tree/master/python/pyspark/streaming]. I'm
coming from PySpark 2.4.4 where this was possible. _Should Kafka be excluded as
advanced source for spark streaming in Python API in the docs?_
Note that I'm aware of this Kafka integration guide
[https://spark.apache.org/docs/latest/structured-streaming-kafka-integration.html]
but I'm not interested in Structured Streaming as it doesn't support arbitrary
stateful operations in Python. DStreams support this functionality with
`updateStateByKey`.
!image-2021-10-12-10-04-03-232.png!
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