Error while reading CDM Entity previously created from ADF

[oxsmose]

We've got the error java.util.NoSuchElementException: No value found for 'Unknown' when we try to read an entity previously created by ADF.

/databricks/spark/python/pyspark/sql/readwriter.py in load(self, path, format, schema, **options)
170 return self._df(self._jreader.load(self._spark._sc._jvm.PythonUtils.toSeq(path)))
171 else:
--> 172 return self._df(self._jreader.load())
173
174 @SInCE(1.4)

/databricks/spark/python/lib/py4j-0.10.7-src.zip/py4j/java_gateway.py in call(self, *args)
1255 answer = self.gateway_client.send_command(command)
1256 return_value = get_return_value(
-> 1257 answer, self.gateway_client, self.target_id, self.name)
1258
1259 for temp_arg in temp_args:

/databricks/spark/python/pyspark/sql/utils.py in deco(*a, **kw)
61 def deco(*a, **kw):
62 try:
---> 63 return f(*a, **kw)
64 except py4j.protocol.Py4JJavaError as e:
65 s = e.java_exception.toString()

/databricks/spark/python/lib/py4j-0.10.7-src.zip/py4j/protocol.py in get_return_value(answer, gateway_client, target_id, name)
326 raise Py4JJavaError(
327 "An error occurred while calling {0}{1}{2}.\n".
--> 328 format(target_id, ".", name), value)
329 else:
330 raise Py4JError(

Py4JJavaError: An error occurred while calling o5124.load.
: java.util.NoSuchElementException: No value found for 'Unknown'
at scala.Enumeration.withName(Enumeration.scala:124)
at com.microsoft.cdm.utils.CDMModelReader$$anonfun$2.apply(CDMModelReader.scala:72)
at com.microsoft.cdm.utils.CDMModelReader$$anonfun$2.apply(CDMModelReader.scala:40)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.Iterator$class.foreach(Iterator.scala:891)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
at scala.collection.AbstractTraversable.map(Traversable.scala:104)
at com.microsoft.cdm.utils.CDMModelReader.getStructType(CDMModelReader.scala:40)
at com.microsoft.cdm.utils.CDMModelReader.getSchema(CDMModelReader.scala:98)
at com.microsoft.cdm.read.CDMDataSourceReader$$anonfun$readSchema$1.apply(CDMDataSourceReader.scala:45)
at com.microsoft.cdm.read.CDMDataSourceReader$$anonfun$readSchema$1.apply(CDMDataSourceReader.scala:45)
at com.microsoft.cdm.log.SparkCDMLogger$.logEventToKustoForPerf(SparkCDMLogger.scala:43)
at com.microsoft.cdm.read.CDMDataSourceReader.readSchema(CDMDataSourceReader.scala:44)
at org.apache.spark.sql.execution.datasources.v2.DataSourceV2Relation$.create(DataSourceV2Relation.scala:175)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:290)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:203)
at sun.reflect.GeneratedMethodAccessor339.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:380)
at py4j.Gateway.invoke(Gateway.java:295)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:251)
at java.lang.Thread.run(Thread.java:748)

[bissont]

Hello, I believe occurs because ADF assumes an attribute of type "Unknown" is a string. The Spark-CDM-Connector does not make that assumption.

[bissont]

I believe this is fixed .19. Can you verify it is fixed?

[oxsmose]

I will check, thanks

[bitsofinfo]

@oxsmose did the fix work for you?