executor: fix log format and add transaction start TS. (#2469)
executor: fix log format and add transaction start TS. (#2469)


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