I have this simple pig script but when I run I get: 2012-08-28 17:50:24,924 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Failed! 2012-08-28 17:50:24,939 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1066: Unable to open iterator for alias C
DEFINE SequenceFileLoader org.apache.pig.piggybank.storage.SequenceFileLoader(); A = LOAD '/flume_vol/flume/2012/08/24/13/dslg1/*.snappy' USING SequenceFileLoader AS (key:long, document:bytearray); B = GROUP A BY key; C = foreach B generate COUNT(A); dump C; I do see data in the files: hadoop fs -cat /flume_vol/flume/2012/08/24/13/dslg1/web.1345840674870.snappy|more SEQ!org.apache.hadoop.io.LongWritable"org.apache.hadoop.io.BytesWritable)org.apache.hadoop.io.compress.SnappyCodec ~
