I am having an error when trying to run plain Scala code in Spark similar to these posts: this and this
Their problem was that they were using the wrong Scala version to compile their Spark project. However, mine is the correct version.
I have Spark 1.6.0 installed on an AWS EMR cluster to run the program. The project is compiled on my local machine with Scala 2.11 installed and 2.11 listed in all dependencies and build files without any references to 2.10.
This is the exact line that throws the error:
var fieldsSeq: Seq[StructField] = Seq()
And this is the exact error:
Exception in thread "main" java.lang.NoSuchMethodError: scala.runtime.ObjectRef.create(Ljava/lang/Object;)Lscala/runtime/ObjectRef;
at com.myproject.MyJob$.main(MyJob.scala:39)
at com.myproject.MyJob.main(MyJob.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)