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error rate while reading input records crossed threshold
java.lang.Exception: Unknown error	at com.twitter.elephantbird.mapreduce.input.LzoRecordReader$InputErrorTracker.incErrors(LzoRecordReader.java:138)	at com.twitter.elephantbird.mapreduce.input.LzoBinaryB64LineRecordReader.nextKeyValue(LzoBinaryB64LineRecordReader.java:135)	at com.twitter.elephantbird.pig.load.LzoBaseLoadFunc.getNextBinaryValue(LzoBaseLoadFunc.java:107)	at com.twitter.elephantbird.pig.load.ProtobufPigLoader.getNext(ProtobufPigLoader.java:62)	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigRecordReader.nextKeyValue(PigRecordReader.java:187)	at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.nextKeyValue(MapTask.java:540)	at org.apache.hadoop.mapreduce.MapContext.nextKeyValue(MapContext.java:67)	at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:143)	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:771)	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:375)	at org.apache.hadoop.mapred.Child$4.run(Child.java:255)	at java.security.AccessController.doPrivileged(Native Method)	at javax.security.auth.Subject.doAs(Subject.java:396)	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1132)	at org.apache.hadoop.mapred.Child.main(Child.java:249)