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    via Stack Overflow by java_enthu

    Check for bad records in the input data (like (null))

Solutions on the web

via Google Groups by Zhu Wayne, 1 year ago
ERROR 1066: Unable to open iterator for alias raw. Backend error : Unable to recreate exception from backed error: Error: Found interface org.apache.hadoop.mapreduce.Counter, but class was expected
via apache.org by Unknown author, 2 years ago
ERROR 1066: Unable > to open iterator for alias raw
via grokbase.com by Unknown author, 2 years ago
ERROR 1066: Unable to open iterator for alias data
via pig-user by Venkat Ramakrishnan, 6 months ago
ERROR 1066: Unable to > open iterator for alias data >
via pig-user by Praveen R, 6 months ago
ERROR 1066: Unable to > open iterator for alias data >
via pig-user by Russell Jurney, 6 months ago
ERROR 1066: Unable to > open iterator for alias data >
org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable
 to open iterator for alias raw. Backend error : Unable to recreate
 exception from backed error: Error: Found interface
 org.apache.hadoop.mapreduce.Counter, but class was expected	at org.apache.pig.PigServer.openIterator(PigServer.java:826)