scala - NoSuchMethod exception in Flink when using dataset with custom object array -

i have problem flink

java.lang.nosuchmethoderror: org.apache.flink.api.java.typeutils.objectarraytypeinfo.getinfofor(lorg/apache/flink/api/common/typeinfo/typeinformation;)lorg/apache/flink/api/java/typeutils/objectarraytypeinfo;     @ lowlevel.flinkimplementation.flinkimplementation$$anon$6.<init>(flinkimplementation.scala:28)     @ lowlevel.flinkimplementation.flinkimplementation.<init>(flinkimplementation.scala:28)     @ irlogic.gmqlserver.<init>(gmqlserver.scala:15)     @ it.polimi.app$.main(app.scala:20)     @ it.polimi.app.main(app.scala)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     ... 

the line problem 1

implicit val regiontypeinformation =           api.scala.createtypeinformation[flinkdatatypes.flinkregiontype] 

in flinkregiontype have array of custom object

i developed app maven plugin in ide , working good, when move version downloaded website error above

i using flink 0.9

i thinking library may missing using maven handling everything. running through code of objectarraytypeinfo.java doesn't seem problem

a nosuchmethoderror commonly indicates version mismatch between libraries flink program compiled , system program executed on. if same code works in ide setup compile , execution libraries same.

in such case, should check version of flink dependencies, example in maven pom file.