tree f1fb8675172a2c5db9998fbca9299bfd19df2820
parent 4e214504fdf65fa9c8d15635591e406688df9550
author YPZhang <yunpeng@onlab.us> 1466116318 -0700
committer YPZhang <yunpeng@onlab.us> 1466447294 -0700

Modify loop algorithm
    - Re-run iteration if it was failed.
    - Check result is valid for database.

Change-Id: I44ad1183282559199bf73f5bedb12a4db773f908