Now，we want to improve the performance and stability of loading data，one way is only load some tablets in the partition instead of all tablets which may cause many little files and bring instability，and for stability I would gradually change it, the first step is to support tablet with version property and then enable be to submit some tablets of one partition to commit transaction and finally publish them.
The main advantages of this feature is : each load may only involve a small number of be nodes, which can greatly enhance the stability of the loading data.
