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java.lang.NullPointerException: 	at com.marklogic.tree.CompressedTreeDecoder.decode(CompressedTreeDecoder.java:487)	at com.marklogic.mapreduce.ForestReader.getNextTree(ForestReader.java:367)	at com.marklogic.mapreduce.ForestReader.nextKeyValue(ForestReader.java:153)	at com.marklogic.contentpump.LocalJobRunner$TrackingRecordReader.nextKeyValue(LocalJobRunner.java:444)	at org.apache.hadoop.mapreduce.task.MapContextImpl.nextKeyValue(MapContextImpl.java:80)	at org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.nextKeyValue(WrappedMapper.java:91)	at com.marklogic.contentpump.MultithreadedMapper$SubMapRecordReader.nextKeyValue(MultithreadedMapper.java:275)	at org.apache.hadoop.mapreduce.task.MapContextImpl.nextKeyValue(MapContextImpl.java:80)	at org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.nextKeyValue(WrappedMapper.java:91)	at com.marklogic.contentpump.BaseMapper.runThreadSafe(BaseMapper.java:45)	at com.marklogic.contentpump.MultithreadedMapper$MapRunner.run(MultithreadedMapper.java:379)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	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:745)