statistics: add recover to protect background task (#58739) (#58763)

close #58738

Author: ti-chi-bot

metrics/metrics.go

@@ -54,6 +54,7 @@ const (
 	LabelDDLSyncer = "ddl-syncer"
 	LabelGCWorker  = "gcworker"
 	LabelAnalyze   = "analyze"
+	LabelStats     = "stats"
 
 	LabelBatchRecvLoop = "batch-recv-loop"
 	LabelBatchSendLoop = "batch-send-loop"

statistics/handle/ddl.go

@@ -20,6 +20,7 @@ import (
 	"github.com/pingcap/errors"
 	"github.com/pingcap/tidb/ddl/util"
 	"github.com/pingcap/tidb/kv"
+	"github.com/pingcap/tidb/metrics"
 	"github.com/pingcap/tidb/parser/ast"
 	"github.com/pingcap/tidb/parser/model"
 	"github.com/pingcap/tidb/parser/mysql"
@@ -28,13 +29,15 @@ import (
 	"github.com/pingcap/tidb/sessionctx/variable"
 	"github.com/pingcap/tidb/sessiontxn"
 	"github.com/pingcap/tidb/types"
+	tidbutil "github.com/pingcap/tidb/util"
 	"github.com/pingcap/tidb/util/logutil"
 	"github.com/pingcap/tidb/util/sqlexec"
 	"go.uber.org/zap"
 )
 
 // HandleDDLEvent begins to process a ddl task.
 func (h *Handle) HandleDDLEvent(t *util.Event) error {
+	defer tidbutil.Recover(metrics.LabelStats, "handleDDLEvent", nil, false)
 	switch t.Tp {
 	case model.ActionCreateTable, model.ActionTruncateTable:
 		ids := h.getInitStateTableIDs(t.TableInfo)