*: Support hot-reloading option enable-arrow (#12621)
*: Support hot-reloading option enable-arrow (#12621)


kyle-wang/tidb,kyle-wang/tidb,ngaut/tidb,ming-relax/tidb,c4pt0r/tidb,kyle-wang/tidb,ngaut/tidb,coocood/tidb,ngaut/tidb,Cofyc/tidb,XuHuaiyu/tidb,ngaut/tidb,EvilMcJerkface/tidb,c4pt0r/tidb,kyle-wang/tidb,pingcap/tidb,kyle-wang/tidb,ming-relax/tidb,c4pt0r/tidb,kyle-wang/tidb,pingcap/tidb,ngaut/tidb,pingcap/tidb,coocood/tidb,c4pt0r/tidb,pingcap/tidb,pingcap/tidb,EvilMcJerkface/tidb,ngaut/tidb,pingcap/tidb,c4pt0r/tidb,XuHuaiyu/tidb,Cofyc/tidb,c4pt0r/tidb