tree 892ed6cd8d69d89d7b81dae79aeb7486f0f8e835
parent 51f0034de3da46302b5c6827f1a6ff643341ee94
author buyingyi <buyingyi@gmail.com> 1369250826 -0700
committer buyingyi <buyingyi@gmail.com> 1369250826 -0700

reduce unnecessary B-Tree (non-inplace) update