Spark creates files with no extension, so using the following:

EXEC Spark.getTextFiles('part-00001') will generate an error when trying any of the following ways: part-. or part*.* or part-*

org.teiid.runtime.client.TeiidClientException: java.lang.RuntimeException: Remote org.teiid.core.TeiidProcessingException: TEIID30504 Spark: File not found part*.*