Major Description
To reproduce the error, run the following query-
A = load 'foo' as (id:int, fruit); B = load 'foo' as (id:int, fruit); C = union A, B; D = group C by id; E = load 'foo' as (id:int, fruit); F = join D by group, E by id using 'replicated'; dump F;
Here is the stack trace-
Error: Failure while running task:java.lang.NullPointerException : at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.Packager.getValueTuple(Packager.java:215) : at org.apache.pig.backend.hadoop.executionengine.tez.POShuffleTezLoad.getNextTuple(POShuffleTezLoad.java:179) : at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:301) : at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POFRJoin.getNextTuple(POFRJoin.java:270) : at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:301) : at org.apache.pig.backend.hadoop.executionengine.tez.POStoreTez.getNextTuple(POStoreTez.java:113) : at org.apache.pig.backend.hadoop.executionengine.tez.PigProcessor.runPipeline(PigProcessor.java:317) : at org.apache.pig.backend.hadoop.executionengine.tez.PigProcessor.run(PigProcessor.java:196) : at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:324) : at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:180) : at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:172) : at java.security.AccessController.doPrivileged(Native Method) : at javax.security.auth.Subject.doAs(Subject.java:415) : at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548) : at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.call(TezTaskRunner.java:172) : at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.call(TezTaskRunner.java:167) : at java.util.concurrent.FutureTask.run(FutureTask.java:262) : at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) : at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) : at java.lang.Thread.run(Thread.java:744)