example.pig

input_data = LOAD '/tmp/foobar' USING PigStorage(',') AS (some_id:int, some_val:chararray);

smaller_data = FILTER input_data BY (some_id > 5) OR (some_val == 'foobar') OR (some_val == 'bizbaz');

STORE smaller_data INTO '/tmp/smallerdata';

Map Reduce Plan

2013-08-01 22:22:37,977 [main] INFO  org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimi\
zer - MR plan size before optimization: 1
2013-08-01 22:22:37,991 [main] INFO  org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimi\
zer - MR plan size after optimization: 1
#--------------------------------------------------
# Map Reduce Plan
#--------------------------------------------------
MapReduce node 1-51
Map Plan
Store(fakefile:org.apache.pig.builtin.PigStorage) - 1-50
|
|---Filter[bag] - 1-38
    |   |
    |   Or[boolean] - 1-49
    |   |
    |   |---Or[boolean] - 1-45
    |   |   |
    |   |   |---Greater Than[boolean] - 1-41
    |   |   |   |
    |   |   |   |---Project[int][0] - 1-39
    |   |   |   |
    |   |   |   |---Constant(5) - 1-40
    |   |   |
    |   |   |---Equal To[boolean] - 1-44
    |   |       |
LogicalExpressionOperator    |   |       |---Project[chararray][1] - 1-42
    |   |       |
    |   |       |---Constant(foobar) - 1-43
    |   |
    |   |---Equal To[boolean] - 1-48
    |       |
    |       |---Project[chararray][1] - 1-46
    |       |
    |       |---Constant(bizbaz) - 1-47
    |
    |---New For Each(false,false)[bag] - 1-37
        |   |
        |   Cast[int] - 1-34
        |   |
        |   |---Project[bytearray][0] - 1-33
        |   |
        |   Cast[chararray] - 1-36
        |   |
        |   |---Project[bytearray][1] - 1-35
        |
        |---Load(file:///tmp/foobar:PigStorage(',')) - 1-32--------