of the actual plan and the expected plan.
Here are steps that one might do for query parser:-
* Given a query string, construct the plan.
* Construct the expected plan
* Compare two plans
Here for testing plan optimizer:-
* Construct a plan
* Run optimizer
* Construct the expected plan
==
The pig query language provides several significant advantages compared to
straight map reduce:
1. There are common data query operations that most, if not all, users
querying data make use of. These include project, filter, aggregate, join, and
sort (all of the common data base relational
