spark kryo serilizable exception

hi all, In RDD map , i invoke an object that is *Serialized* by java standard , and exception :: com.esotericsoftware.kryo.KryoException: Buffer overflow. Available: 0, required: 13 at com.esotericsoftware.kryo.io.Output.require(Output.java:138) at com.esotericsoftware.kryo.io.Output.writeAscii_

How to specify the job to run on the specific nodes(machines) in the hadoop yarn cluster?

Hi all, RT. I want to run a job on specific two nodes in the cluster? How to configure the yarn? Dose yarn queue help? Thanks