search enhance, step 4, add mergesize into mdt-tool
search enhance, step 4, add mergesize into mdt-tool

caijieming-baidu/mdt,bdtbd/mdt,caijieming-baidu/mdt,caijieming-baidu/mdt,bdtbd/mdt,bdtbd/mdt,caijieming-baidu/mdt,caijieming-baidu/mdt,bdtbd/mdt,bdtbd/mdt,caijieming-baidu/mdt,caijieming-baidu/mdt