HAWQ-1144. Put partition multi-level check ahead of hdfs file check.
HAWQ-1144. Put partition multi-level check ahead of hdfs file check.

huor/incubator-hawq,outofmem0ry/incubator-hawq,jianlirong/incubator-hawq,jianlirong/incubator-hawq,lavjain/incubator-hawq,jianlirong/incubator-hawq,lavjain/incubator-hawq,huor/incubator-hawq,outofmem0ry/incubator-hawq,wengyanqing/incubator-hawq,lavjain/incubator-hawq,outofmem0ry/incubator-hawq,wengyanqing/incubator-hawq,wengyanqing/incubator-hawq,lavjain/incubator-hawq,stanlyxiang/incubator-hawq,lavjain/incubator-hawq,huor/incubator-hawq,outofmem0ry/incubator-hawq,jianlirong/incubator-hawq,lavjain/incubator-hawq,stanlyxiang/incubator-hawq,stanlyxiang/incubator-hawq,lavjain/incubator-hawq,outofmem0ry/incubator-hawq,huor/incubator-hawq,jianlirong/incubator-hawq,stanlyxiang/incubator-hawq,jianlirong/incubator-hawq,wengyanqing/incubator-hawq,huor/incubator-hawq,wengyanqing/incubator-hawq,stanlyxiang/incubator-hawq,huor/incubator-hawq,wengyanqing/incubator-hawq,outofmem0ry/incubator-hawq,lavjain/incubator-hawq,jianlirong/incubator-hawq,stanlyxiang/incubator-hawq,outofmem0ry/incubator-hawq,huor/incubator-hawq,wengyanqing/incubator-hawq,jianlirong/incubator-hawq,wengyanqing/incubator-hawq,stanlyxiang/incubator-hawq,outofmem0ry/incubator-hawq