tree 3330c4505b4160e22d5454d640e18cd32e5cb90b
parent 396c18bcbcba294f2541aded0c6902670479a375
author Yingyi Bu <buyingyi@gmail.com> 1403596717 -0700
committer Ian Maxon <imaxon@uci.edu> 1403680581 -0800

1. make limit operator work in nested plan
2. avoid send-side materialize but use receive-side materialize to reduce cc/nc communications.

Change-Id: I1a90c70be0514fcc0b286afa456664618d68910f
Reviewed-on: http://fulliautomatix.ics.uci.edu:8443/80
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Pouria Pirzadeh <pouria.pirzadeh@gmail.com>