Apache Hadoop MapReduce Core errors

A software framework for easily writing applications which process vast amounts of data in-parallel on large clusters of commodity hardware in a reliable, fault-tolerant manner

https://hadoop.apache.org/docs/r1.2.1/mapred_tutorial.html
Solution coverage:
Summary coverage:

DescriptionException TypeEntry MethodWeb pages

Job$10.run() has thrown an IncompatibleClassChangeError

java.lang.IncompatibleClassChangeError
org.apache.hadoop.mapreduce.Job$10.run
11Web pages
IncompatibleClassChangeErrorJob$10.run11
Package nameClass namePatterns foundSolution coverageSummary coverage
org.apache.hadoop.mapreduceJob125
org.apache.hadoop.mapreduceJobSubmitter19
org.apache.hadoop.mapreduceMapper11
org.apache.hadoop.mapreduceTaskInputOutputContext7
org.apache.hadoop.mapreduceCluster6
org.apache.hadoop.mapreduceJob$106
org.apache.hadoop.mapreduceJobContext2
org.apache.hadoop.mapreduceJobSubmissionFiles1
org.apache.hadoop.mapreduceTaskAttemptID1
org.apache.hadoop.mapreduceJobID1
org.apache.hadoop.mapreduceReducer1
Package nameClass nameMethod namePatterns foundSolution coverage
org.apache.hadoop.mapreduceJob$10run6
Package nameClass nameMethod nameException TypePatterns foundSolution coverage
org.apache.hadoop.mapreduceJob$10runIOException3
org.apache.hadoop.mapreduceJob$10runIncompatibleClassChangeError2
org.apache.hadoop.mapreduceJob$10runInvalidJobConfException1