ddl: use static contexts in NewReorgCopContext (#55823)

ref #53388

Author: lcwangchao

pkg/ddl/BUILD.bazel

@@ -281,6 +281,7 @@ go_test(
         "//pkg/ddl/session",
         "//pkg/ddl/testutil",
         "//pkg/ddl/util",
+        "//pkg/distsql/context",
         "//pkg/disttask/framework/proto",
         "//pkg/disttask/framework/scheduler",
         "//pkg/disttask/framework/storage",
@@ -291,6 +292,7 @@ go_test(
         "//pkg/errno",
         "//pkg/executor",
         "//pkg/expression",
+        "//pkg/expression/contextstatic",
         "//pkg/infoschema",
         "//pkg/keyspace",
         "//pkg/kv",
@@ -306,6 +308,7 @@ go_test(
         "//pkg/parser/mysql",
         "//pkg/parser/terror",
         "//pkg/parser/types",
+        "//pkg/privilege",
         "//pkg/server",
         "//pkg/session",
         "//pkg/session/types",
@@ -331,6 +334,7 @@ go_test(
         "//pkg/util/context",
         "//pkg/util/dbterror",
         "//pkg/util/dbterror/plannererrors",
+        "//pkg/util/deeptest",
         "//pkg/util/domainutil",
         "//pkg/util/gcutil",
         "//pkg/util/generic",

pkg/ddl/backfilling.go

@@ -169,9 +169,10 @@ type backfillCtx struct {
 
 func newBackfillCtx(id int, rInfo *reorgInfo,
 	schemaName string, tbl table.Table, jobCtx *ReorgContext, label string, isDistributed bool) (*backfillCtx, error) {
-	sessCtx, err := newSessCtx(rInfo.jobCtx.store, rInfo.ReorgMeta)
-	if err != nil {
-		return nil, err
+	// TODO: remove newReorgSessCtx
+	sessCtx := newReorgSessCtx(rInfo.jobCtx.store)
+	if err := initSessCtx(sessCtx, rInfo.ReorgMeta); err != nil {
+		return nil, errors.Trace(err)
 	}
 
 	if isDistributed {

pkg/ddl/backfilling_scheduler.go

@@ -28,12 +28,14 @@ import (
 	"github.com/pingcap/tidb/pkg/errctx"
 	"github.com/pingcap/tidb/pkg/kv"
 	"github.com/pingcap/tidb/pkg/meta/model"
+	"github.com/pingcap/tidb/pkg/resourcegroup"
 	"github.com/pingcap/tidb/pkg/sessionctx"
 	"github.com/pingcap/tidb/pkg/sessionctx/stmtctx"
 	"github.com/pingcap/tidb/pkg/sessionctx/variable"
 	"github.com/pingcap/tidb/pkg/table"
 	contextutil "github.com/pingcap/tidb/pkg/util/context"
 	"github.com/pingcap/tidb/pkg/util/execdetails"
+	"github.com/pingcap/tidb/pkg/util/intest"
 	"github.com/pingcap/tidb/pkg/util/memory"
 	"github.com/pingcap/tidb/pkg/util/mock"
 	decoder "github.com/pingcap/tidb/pkg/util/rowDecoder"
@@ -125,30 +127,34 @@ func NewReorgCopContext(
 	allIdxInfo []*model.IndexInfo,
 	requestSource string,
 ) (copr.CopContext, error) {
-	sessCtx, err := newSessCtx(store, reorgMeta)
+	warnHandler := contextutil.NewStaticWarnHandler(0)
+	distSQLCtx, err := newReorgDistSQLCtxWithReorgMeta(store.GetClient(), reorgMeta, warnHandler)
+	if err != nil {
+		return nil, err
+	}
+
+	exprCtx, err := newReorgExprCtxWithReorgMeta(reorgMeta, warnHandler)
 	if err != nil {
 		return nil, err
 	}
+
+	evalCtx := exprCtx.GetEvalCtx()
+	tc, ec := evalCtx.TypeCtx(), evalCtx.ErrCtx()
+	pushDownFlags := stmtctx.PushDownFlagsWithTypeFlagsAndErrLevels(tc.Flags(), ec.LevelMap())
+
 	return copr.NewCopContext(
-		sessCtx.GetExprCtx(),
-		sessCtx.GetDistSQLCtx(),
-		sessCtx.GetSessionVars().StmtCtx.PushDownFlags(),
+		exprCtx,
+		distSQLCtx,
+		pushDownFlags,
 		tblInfo,
 		allIdxInfo,
 		requestSource,
 	)
 }
 
-func newSessCtx(store kv.Storage, reorgMeta *model.DDLReorgMeta) (sessionctx.Context, error) {
-	sessCtx := newReorgSessCtx(store)
-	if err := initSessCtx(sessCtx, reorgMeta); err != nil {
-		return nil, errors.Trace(err)
-	}
-	return sessCtx, nil
-}
-
-func newDefaultReorgDistSQLCtx(kvClient kv.Client) *distsqlctx.DistSQLContext {
-	warnHandler := contextutil.NewStaticWarnHandler(0)
+func newDefaultReorgDistSQLCtx(kvClient kv.Client, warnHandler contextutil.WarnAppender) *distsqlctx.DistSQLContext {
+	intest.AssertNotNil(kvClient)
+	intest.AssertNotNil(warnHandler)
 	var sqlKiller sqlkiller.SQLKiller
 	var execDetails execdetails.SyncExecDetails
 	return &distsqlctx.DistSQLContext{
@@ -168,10 +174,23 @@ func newDefaultReorgDistSQLCtx(kvClient kv.Client) *distsqlctx.DistSQLContext {
 		TiFlashMaxBytesBeforeExternalSort:    variable.DefTiFlashMaxBytesBeforeExternalSort,
 		TiFlashMaxQueryMemoryPerNode:         variable.DefTiFlashMemQuotaQueryPerNode,
 		TiFlashQuerySpillRatio:               variable.DefTiFlashQuerySpillRatio,
+		ResourceGroupName:                    resourcegroup.DefaultResourceGroupName,
 		ExecDetails:                          &execDetails,
 	}
 }
 
+func newReorgDistSQLCtxWithReorgMeta(kvClient kv.Client, reorgMeta *model.DDLReorgMeta, warnHandler contextutil.WarnAppender) (*distsqlctx.DistSQLContext, error) {
+	loc, err := reorgTimeZoneWithTzLoc(reorgMeta.Location)
+	if err != nil {
+		return nil, errors.Trace(err)
+	}
+	ctx := newDefaultReorgDistSQLCtx(kvClient, warnHandler)
+	ctx.Location = loc
+	ctx.ErrCtx = errctx.NewContextWithLevels(reorgErrLevelsWithSQLMode(reorgMeta.SQLMode), ctx.WarnHandler)
+	ctx.ResourceGroupName = reorgMeta.ResourceGroupName
+	return ctx, nil
+}
+
 // initSessCtx initializes the session context. Be careful to the timezone.
 func initSessCtx(sessCtx sessionctx.Context, reorgMeta *model.DDLReorgMeta) error {
 	// Correct the initial timezone.