Recovery fails when InputDescriptor is changed during input initialization

2015-12-07 10:17:00,742 [main] ERROR org.apache.pig.tools.grunt.GruntParser - ERROR 2998: Unhandled internal error. Vertex failed, vertexName=scope-106, vertexId=vertex_1448526568607_13994_1_00, diagnostics=[Task failed, taskId=task_1448526568607_13994_1_00_000008, diagnostics=[TaskAttempt 0 killed, TaskAttempt 1 failed, info=[Error: Failure while running task: attempt_1448526568607_13994_1_00_000008_1:java.lang.IllegalArgumentException: Split information not expected in org.apache.tez.mapreduce.input.MRInput
	at com.google.common.base.Preconditions.checkArgument(Preconditions.java:88)
	at org.apache.tez.mapreduce.input.base.MRInputBase.initialize(MRInputBase.java:68)
	at org.apache.tez.mapreduce.input.MRInput.initialize(MRInput.java:436)
	at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask$InitializeInputCallable._callInternal(LogicalIOProcessorRuntimeTask.java:432)
	at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask$InitializeInputCallable.callInternal(LogicalIOProcessorRuntimeTask.java:414)
	at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask$InitializeInputCallable.callInternal(LogicalIOProcessorRuntimeTask.java:399)
	at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
],