Error while using Hadoop Partitioning

问题

This is what I am doing:

public class MOPartition extends Partitioner<Text, Text> {
        public MOPartition() {}
...
}

Error:

java.lang.RuntimeException: java.lang.NoSuchMethodException: globalSort$MOPartition.()

Even defining a empty constructor didnt help.

I then Googled it and came across following link http://lucene.472066.n3.nabble.com/preserve-JobTracker-information-td826974.html. I then checked my JRE version and it is 1.6.0.26. So, I think I am pretty much safe as far JRE is concerned.

Can you please suggest what can be the issue?

来源：https://stackoverflow.com/questions/9437895/error-while-using-hadoop-partitioning