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$XMLRecordReader.initialize(XMLLoader.java:102) at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigRecordReader.initialize(PigRecordReader.java:181) at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:522) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370) at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
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