tree 4fe525a22889750df032aca244ed71acdac2a357
parent d00077177485ff6c3d44703be759347894ba86fd
author buyingyi <buyingyi@gmail.com> 1422427101 -0800
committer Ian Maxon <imaxon@uci.edu> 1422585616 -0800

1. Tracks the variables coming from the outer branch of loj to later decide whether they are still nullable
2. Deals with variables in nested subplans in OperatorPropertiesUtil

Change-Id: I6438fad75ee308e3f6c2b276f0d6b7c882e5b379
Reviewed-on: http://fulliautomatix.ics.uci.edu:8443/121
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Yingyi Bu <buyingyi@gmail.com>