[Pig Wiki] Update of "LocalJobRunner" by PiSong

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The following page has been changed by PiSong:
http://wiki.apache.org/pig/LocalJobRunner

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  I guess the choice is harder now :)
  The choice now depends on what we want to do for the full blown foreach. Since I would like to implement choice (ii), I would vote for using LocalJobRunner.
  
+ [pi] I think whether to do dynamic execution engine selection might not be a factor in this decision making process.
+ 
+ The main point is “Does LocalJobRunner perform as good as LocalEngine  in most cases?”.  My concern would be the case where we have a lot of small inner bags in our processing.
+ 
+ I vote (i) to neutralize your vote.
+