Is this not supported? I found this diff <https://github.com/apache/spark/pull/18416/files> and wonder if this is a bug or am I doing something wrong?
======== see below ========= import scala.collection.Set case class A(ps: Set[Int], x: Int) val az = Seq(A(Set(1, 2), 1), A(Set(2), 2)) az.toDS java.lang.UnsupportedOperationException: Schema for type scala.collection.Set[scala.Int] is not supported at org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$schemaFor$1.apply(ScalaReflection.scala:789) at org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$schemaFor$1.apply(ScalaReflection.scala:724) at scala.reflect.internal.tpe.TypeConstraints$UndoLog.undo(TypeConstraints.scala:56) at org.apache.spark.sql.catalyst.ScalaReflection$class.cleanUpReflectionObjects(ScalaReflection.scala:906) at org.apache.spark.sql.catalyst.ScalaReflection$.cleanUpReflectionObjects(ScalaReflection.scala:46) at org.apache.spark.sql.catalyst.ScalaReflection$.schemaFor(ScalaReflection.scala:723) at org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$org$apache$spark$sql$catalyst$ScalaReflection$$deserializerFor$1$$anonfun$7.apply(ScalaReflection.scala:388) at org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$org$apache$spark$sql$catalyst$ScalaReflection$$deserializerFor$1$$anonfun$7.apply(ScalaReflection.scala:387) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.immutable.List.foreach(List.scala:392) at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at scala.collection.immutable.List.map(List.scala:296) at org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$org$apache$spark$sql$catalyst$ScalaReflection$$deserializerFor$1.apply(ScalaReflection.scala:387) at org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$org$apache$spark$sql$catalyst$ScalaReflection$$deserializerFor$1.apply(ScalaReflection.scala:157) at scala.reflect.internal.tpe.TypeConstraints$UndoLog.undo(TypeConstraints.scala:56) at org.apache.spark.sql.catalyst.ScalaReflection$class.cleanUpReflectionObjects(ScalaReflection.scala:906) at org.apache.spark.sql.catalyst.ScalaReflection$.cleanUpReflectionObjects(ScalaReflection.scala:46) at org.apache.spark.sql.catalyst.ScalaReflection$.org$apache$spark$sql$catalyst$ScalaReflection$$deserializerFor(ScalaReflection.scala:157) at org.apache.spark.sql.catalyst.ScalaReflection$.deserializerFor(ScalaReflection.scala:145) at org.apache.spark.sql.catalyst.encoders.ExpressionEncoder$.apply(ExpressionEncoder.scala:72) at org.apache.spark.sql.Encoders$.product(Encoders.scala:276) at org.apache.spark.sql.LowPrioritySQLImplicits$class.newProductEncoder(SQLImplicits.scala:248) at org.apache.spark.sql.SQLImplicits.newProductEncoder(SQLImplicits.scala:34) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:6) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:82) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:84) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:86) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:88) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:90) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:92) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:94) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:96) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:98) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:100) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw$$iw.<init>(command-661233094182065:102) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw$$iw.<init>(command-661233094182065:104) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw$$iw.<init>(command-661233094182065:106) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw$$iw.<init>(command-661233094182065:108) at line9f6df40864bf4b14acca9f5c334e0286112.$read$$iw.<init>(command-661233094182065:110) at line9f6df40864bf4b14acca9f5c334e0286112.$read.<init>(command-661233094182065:112) at line9f6df40864bf4b14acca9f5c334e0286112.$read$.<init>(command-661233094182065:116) at line9f6df40864bf4b14acca9f5c334e0286112.$read$.<clinit>(command-661233094182065) at line9f6df40864bf4b14acca9f5c334e0286112.$eval$.$print$lzycompute(<notebook>:7) at line9f6df40864bf4b14acca9f5c334e0286112.$eval$.$print(<notebook>:6) at line9f6df40864bf4b14acca9f5c334e0286112.$eval.$print(<notebook>) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:793) at scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:1054) at scala.tools.nsc.interpreter.IMain$WrappedRequest$$anonfun$loadAndRunReq$1.apply(IMain.scala:645) at scala.tools.nsc.interpreter.IMain$WrappedRequest$$anonfun$loadAndRunReq$1.apply(IMain.scala:644) at scala.reflect.internal.util.ScalaClassLoader$class.asContext(ScalaClassLoader.scala:31) at scala.reflect.internal.util.AbstractFileClassLoader.asContext(AbstractFileClassLoader.scala:19) at scala.tools.nsc.interpreter.IMain$WrappedRequest.loadAndRunReq(IMain.scala:644) at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:576) at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:572) at com.databricks.backend.daemon.driver.DriverILoop.execute(DriverILoop.scala:215) at com.databricks.backend.daemon.driver.ScalaDriverLocal$$anonfun$repl$1.apply$mcV$sp(ScalaDriverLocal.scala:197) at com.databricks.backend.daemon.driver.ScalaDriverLocal$$anonfun$repl$1.apply(ScalaDriverLocal.scala:197) at com.databricks.backend.daemon.driver.ScalaDriverLocal$$anonfun$repl$1.apply(ScalaDriverLocal.scala:197) at com.databricks.backend.daemon.driver.DriverLocal$TrapExitInternal$.trapExit(DriverLocal.scala:653) at com.databricks.backend.daemon.driver.DriverLocal$TrapExit$.apply(DriverLocal.scala:606) at com.databricks.backend.daemon.driver.ScalaDriverLocal.repl(ScalaDriverLocal.scala:197) at com.databricks.backend.daemon.driver.DriverLocal$$anonfun$execute$8.apply(DriverLocal.scala:342) at com.databricks.backend.daemon.driver.DriverLocal$$anonfun$execute$8.apply(DriverLocal.scala:319) at com.databricks.logging.UsageLogging$$anonfun$withAttributionContext$1.apply(UsageLogging.scala:238) at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58) at com.databricks.logging.UsageLogging$class.withAttributionContext(UsageLogging.scala:233) at com.databricks.backend.daemon.driver.DriverLocal.withAttributionContext(DriverLocal.scala:47) at com.databricks.logging.UsageLogging$class.withAttributionTags(UsageLogging.scala:271) at com.databricks.backend.daemon.driver.DriverLocal.withAttributionTags(DriverLocal.scala:47) at com.databricks.backend.daemon.driver.DriverLocal.execute(DriverLocal.scala:319) at com.databricks.backend.daemon.driver.DriverWrapper$$anonfun$tryExecutingCommand$2.apply(DriverWrapper.scala:644) at com.databricks.backend.daemon.driver.DriverWrapper$$anonfun$tryExecutingCommand$2.apply(DriverWrapper.scala:644) at scala.util.Try$.apply(Try.scala:192) at com.databricks.backend.daemon.driver.DriverWrapper.tryExecutingCommand(DriverWrapper.scala:639) at com.databricks.backend.daemon.driver.DriverWrapper.getCommandOutputAndError(DriverWrapper.scala:485) at com.databricks.backend.daemon.driver.DriverWrapper.executeCommand(DriverWrapper.scala:597) at com.databricks.backend.daemon.driver.DriverWrapper.runInnerLoop(DriverWrapper.scala:390) at com.databricks.backend.daemon.driver.DriverWrapper.runInner(DriverWrapper.scala:337) at com.databricks.backend.daemon.driver.DriverWrapper.run(DriverWrapper.scala:219) at java.lang.Thread.run(Thread.java:748) Command took 0.82 seconds -- by mohitja...@gmail.com at 8/8/2019, 8:36:06 PM on My Cluster
