On 7/1/2016 6:42 AM, Akhil Das wrote:
case class Holder(str: String, js:JsValue)
Hello,
Thanks!
I tried that before posting the question to the list but I keep getting
an error such as this even after the map() operation to convert
(String,JsValue) -> Holder and then toDF().
I am simply invoking the following:
val rddDF:DataFrame = rdd.map(x => Holder(x._1,x._2)).toDF
rddDF.registerTempTable("rddf")
rddDF.schema.mkString(",")
And getting the following:
[2016-07-01 11:57:02,720] WARN .jobserver.JobManagerActor []
[akka://JobServer/user/context-supervisor/test] - Exception from job
d4c9d145-92bf-4c64-8904-91c917bd61d3:
java.lang.UnsupportedOperationException: Schema for type
play.api.libs.json.JsValue is not supported
at
org.apache.spark.sql.catalyst.ScalaReflection$class.schemaFor(ScalaReflection.scala:718)
at
org.apache.spark.sql.catalyst.ScalaReflection$.schemaFor(ScalaReflection.scala:30)
at
org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$schemaFor$1.apply(ScalaReflection.scala:693)
at
org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$schemaFor$1.apply(ScalaReflection.scala:691)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.immutable.List.foreach(List.scala:318)
at
scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
at scala.collection.AbstractTraversable.map(Traversable.scala:105)
at
org.apache.spark.sql.catalyst.ScalaReflection$class.schemaFor(ScalaReflection.scala:691)
at
org.apache.spark.sql.catalyst.ScalaReflection$.schemaFor(ScalaReflection.scala:30)
at
org.apache.spark.sql.catalyst.ScalaReflection$class.schemaFor(ScalaReflection.scala:630)
at
org.apache.spark.sql.catalyst.ScalaReflection$.schemaFor(ScalaReflection.scala:30)
at
org.apache.spark.sql.SQLContext.createDataFrame(SQLContext.scala:414)
at
org.apache.spark.sql.SQLImplicits.rddToDataFrameHolder(SQLImplicits.scala:94)
-
To unsubscribe e-mail: user-unsubscr...@spark.apache.org