java.io.IOException: Received Error while processing the reduce plan: Caught error from UDF TransformBag[java.lang.Long cannot be cast to java.lang.String [java.lang.Long cannot be cast to java.lang.String]]
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java.io.IOException: Received Error while processing the reduce plan: Caught error from UDF TransformBag[java.lang.Long cannot be cast to java.lang.String [java.lang.Long cannot be cast to java.lang.String]]
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.runPipeline(PigMapReduce.java:307)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.processOnePackageOutput(PigMapReduce.java:247)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:224)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:136)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:430)
at org.apache.hadoop.mapred.Child.main(Child.java:155)