Neil Ramaswamy created SPARK-51376:
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Summary: TransformWithState should throw a nice error message when
HDFS is in use
Key: SPARK-51376
URL: https://issues.apache.org/jira/browse/SPARK-51376
Project: Spark
Issue Type: Improvement
Components: Structured Streaming
Affects Versions: 4.0.0
Reporter: Neil Ramaswamy
Currently, when HDFS is used with TWS, we throw the following exception:
`UNSUPPORTED_FEATURE.STATE_STORE_MULTIPLE_COLUMN_FAMILIES`. The error does not
indicate how to fix the error—not good!
Really, the exception that we need to be throwing is that HDFS is not
supported, and that RocksDB should be used.
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