http://wiki.apache.org/pig/NestedLogicalPlan
This doesn't reflect the current implementation but fundamental idea remains the same. You may want to start from there. Ashutosh On Sun, Oct 24, 2010 at 12:59, Renato Marroquín Mogrovejo <renatoj.marroq...@gmail.com> wrote: > Hi everyone, > > I know Pig builds a logical plan for every bag that the user defines, and > that every new bag will have as its logical plan the combination of the > input bags' logical plans and the comands it uses. Is there any other > command that creates a logical plan? I guess the one that creates the first > logical plan is the STORE comand. And how are the other commands' logical > plans combined? For example if I have a join between two relations, it will > create a single logical plan that contains the loading logical plans, but > how does Pig decide which relation goes where? Or is that a part that > happens while compiling the logical plan into MapReduce and not in the > logical plan? > Thanks in advanced. > > Renato M. >
