This is an automated cherry-pick of pingcap#51455

Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>

executor/builder.go

@@ -1950,14 +1950,28 @@ func (b *executorBuilder) buildMemTable(v *plannercore.PhysicalMemTable) Executo
 			strings.ToLower(infoschema.TableMemoryUsage),
 			strings.ToLower(infoschema.TableMemoryUsageOpsHistory),
 			strings.ToLower(infoschema.ClusterTableMemoryUsage),
+<<<<<<< HEAD:executor/builder.go
 			strings.ToLower(infoschema.ClusterTableMemoryUsageOpsHistory):
+=======
+			strings.ToLower(infoschema.ClusterTableMemoryUsageOpsHistory),
+			strings.ToLower(infoschema.TableResourceGroups),
+			strings.ToLower(infoschema.TableRunawayWatches),
+			strings.ToLower(infoschema.TableCheckConstraints),
+			strings.ToLower(infoschema.TableTiDBCheckConstraints),
+			strings.ToLower(infoschema.TableKeywords),
+			strings.ToLower(infoschema.TableTiDBIndexUsage),
+			strings.ToLower(infoschema.ClusterTableTiDBIndexUsage):
+			memTracker := memory.NewTracker(v.ID(), -1)
+			memTracker.AttachTo(b.ctx.GetSessionVars().StmtCtx.MemTracker)
+>>>>>>> 4f4f911b706 (executor: add memory tracker for memtableRetriever (#51455)):pkg/executor/builder.go
 			return &MemTableReaderExec{
 				baseExecutor: newBaseExecutor(b.ctx, v.Schema(), v.ID()),
 				table:        v.Table,
 				retriever: &memtableRetriever{
-					table:     v.Table,
-					columns:   v.Columns,
-					extractor: v.Extractor,
+					table:      v.Table,
+					columns:    v.Columns,
+					extractor:  v.Extractor,
+					memTracker: memTracker,
 				},
 			}
 		case strings.ToLower(infoschema.TableTiDBTrx),

executor/infoschema_reader.go

@@ -85,6 +85,7 @@ type memtableRetriever struct {
 	retrieved   bool
 	initialized bool
 	extractor   plannercore.MemTablePredicateExtractor
+	memTracker  *memory.Tracker
 }
 
 // retrieve implements the infoschemaRetriever interface
@@ -189,6 +190,9 @@ func (e *memtableRetriever) retrieve(ctx context.Context, sctx sessionctx.Contex
 			return nil, err
 		}
 		e.initialized = true
+		if e.memTracker != nil {
+			e.memTracker.Consume(calculateDatumsSize(e.rows))
+		}
 	}
 
 	// Adjust the amount of each return