session: log retryable errors. (#2832)
session: log retryable errors. (#2832)


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