statistics: copy stats when to update it for avoiding data race (#58106)

close #58074
pingcap · Dec 10, 2024 · 9eddc07 · 9eddc07
1 parent b416484
commit 9eddc07
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/pkg/statistics/handle/storage/read.go b/pkg/statistics/handle/storage/read.go
@@ -660,6 +660,7 @@ func loadNeededColumnHistograms(sctx sessionctx.Context, statsHandle statstypes.
 		// Otherwise, it will trigger the sync/async load again, even if the column has not been analyzed.
 		if loadNeeded && !analyzed {
 			fakeCol := statistics.EmptyColumn(tblInfo.ID, tblInfo.PKIsHandle, colInfo)
+			statsTbl = statsTbl.Copy()
 			statsTbl.SetCol(col.ID, fakeCol)
 			statsHandle.UpdateStatsCache(statstypes.CacheUpdate{
 				Updated: []*statistics.Table{statsTbl},