java.lang.IncompatibleClassChangeError

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    • java.lang.IncompatibleClassChangeError: Found class org.apache.hadoop.mapreduce.TaskAttemptContext, but interface was expected at org.apache.pig.piggybank.storage.XMLLoader$XMLRecordReader.initialize(XMLLoader.java:102) at org.apache.pig.impl.io.ReadToEndLoader.initializeReader(ReadToEndLoader.java:210) at org.apache.pig.impl.io.ReadToEndLoader.getNextHelper(ReadToEndLoader.java:248) at org.apache.pig.impl.io.ReadToEndLoader.getNext(ReadToEndLoader.java:229) at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POLoad.getNextTuple(POLoad.java:137) at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:307) at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POLimit.getNextTuple(POLimit.java:122) at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:307) at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNextTuple(POForEach.java:246) at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:307) at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStore.getNextTuple(POStore.java:159) at org.apache.pig.backend.hadoop.executionengine.fetch.FetchLauncher.runPipeline(FetchLauncher.java:161) at org.apache.pig.backend.hadoop.executionengine.fetch.FetchLauncher.launchPig(FetchLauncher.java:81) at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.launchPig(HExecutionEngine.java:278) at org.apache.pig.PigServer.launchPlan(PigServer.java:1390) at org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:1375) at org.apache.pig.PigServer.storeEx(PigServer.java:1034) at org.apache.pig.PigServer.store(PigServer.java:997) at org.apache.pig.PigServer.openIterator(PigServer.java:910) at org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:746) at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:372) at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:230) at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:205) at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:66) at org.apache.pig.Main.run(Main.java:558) at org.apache.pig.Main.main(Main.java:170)
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