executor: make sure "plan.GlobalPlanCache" is initialized before "plan.PlanCacheEnabled" set to true (#5806)
executor: make sure "plan.GlobalPlanCache" is initialized before "plan.PlanCacheEnabled" set to true (#5806)



Cofyc/tidb,Cofyc/tidb,pingcap/tidb,c4pt0r/tidb,mccxj/tidb,EvilMcJerkface/tidb,c4pt0r/tidb,tiancaiamao/tidb,pingcap/tidb,kyle-wang/tidb,CodeRushing/tidb,c4pt0r/tidb,kyle-wang/tidb,yangwenmai/tidb,pingcap/tidb,tiancaiamao/tidb,ngaut/tidb,ngaut/tidb,Nify/tidb,cosmtrek/tidb,XuHuaiyu/tidb,pingcap/tidb,ming-relax/tidb,wusphinx/tidb,XuHuaiyu/tidb,pingcap/tidb,mccxj/tidb,c4pt0r/tidb,kyle-wang/tidb,coocood/tidb,ngaut/tidb,Nify/tidb,qiuyesuifeng/tidb,kyle-wang/tidb,ngaut/tidb,ming-relax/tidb,wusphinx/tidb,yangwenmai/tidb,qiuyesuifeng/tidb,c4pt0r/tidb,coocood/tidb,pingcap/tidb,kyle-wang/tidb,CodeRushing/tidb,cosmtrek/tidb,EvilMcJerkface/tidb,kyle-wang/tidb,c4pt0r/tidb,ngaut/tidb,ngaut/tidb