Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Pig Wiki" for change 

The following page has been changed by UtkarshSrivastava:

  Each of the above logical operators will translate to a physical operator (in 
many cases, the physical operator will be shared between backends, as shown in 
the above table).
  One physical operators have been linked together into a query plan, they must 
be executed. There is a choice of mainly 2 models for execution (assume that 
data flows downwards in an execution plan):
+ attachment:simple.png
   1. '''Push''': Operator A pushes data to B that operates on it, and pushes 
the result  to C.
   2. '''Pull''': Operator C asks B for its next data item. If B has nothing 
pending to return, it asks A. When A returns a data item, B operates on it, and 
finally returns the result to C.

Reply via email to