tidb: Address comment
tidb: Address comment

liyu4/tidb,pingcap/tidb,ngaut/tidb,myrice/tidb,simon-xia/tidb,qiuyesuifeng/tidb,coocood/tidb,JinheLin/tidb,kyle-wang/tidb,anywhy/tidb,andelf/tidb,coocood/tidb,zimulala/tidb,pingcap/tidb,cosmtrek/tidb,ueizhou/tidb,EvilMcJerkface/tidb,zimulala/tidb,qhsong/tidb,Cofyc/tidb,gaocegege/tidb,Nify/tidb,c4pt0r/tidb,zs634134578/tidb,gaocegege/tidb,pingcap/tidb,silentred/tidb,CodeRushing/tidb,kyle-wang/tidb,silenceper/tidb,XuHuaiyu/tidb,spongedu/tidb,cosmtrek/tidb,pingcap/tidb,astaxie/tidb,ngaut/tidb,Nify/tidb,netroby/tidb,c4pt0r/tidb,louishust/tidb,wusphinx/tidb,kyle-wang/tidb,louishust/tidb,pingcap/tidb,c4pt0r/tidb,8cbx/tidb,astaxie/tidb,c4pt0r/tidb,tiancaiamao/tidb,tiancaiamao/tidb,liyu4/tidb,mccxj/tidb,zs634134578/tidb,ngaut/tidb,yangwenmai/tidb,c4pt0r/tidb,kyle-wang/tidb,ming-relax/tidb,simon-xia/tidb,ueizhou/tidb,anywhy/tidb,ming-relax/tidb,yuanwhy/tidb,JinheLin/tidb,8cbx/tidb,CodeRushing/tidb,EvilMcJerkface/tidb,XuHuaiyu/tidb,spongedu/tidb,silenceper/tidb,silentred/tidb,kyle-wang/tidb,yangwenmai/tidb,ngaut/tidb,netroby/tidb,yuanwhy/tidb,mccxj/tidb,c4pt0r/tidb,pingcap/tidb,myrice/tidb,Cofyc/tidb,ngaut/tidb,ngaut/tidb,andelf/tidb,kyle-wang/tidb,qiuyesuifeng/tidb,wusphinx/tidb,qhsong/tidb