From dc534821cc75d9dde9c7580bba39ccf79c8ef235 Mon Sep 17 00:00:00 2001
From: Ti Chi Robot <ti-community-prow-bot@tidb.io>
Date: Mon, 20 May 2024 22:44:45 +0800
Subject: [PATCH] infoschema: don't display tables in MemDB when query
 `TIDB_HOT_REGIONS` (#52180) (#52206)

close pingcap/tidb#50810
---
 pkg/executor/infoschema_reader.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkg/executor/infoschema_reader.go b/pkg/executor/infoschema_reader.go
index 28fceb9d9e2bf..acdda6baea985 100644
--- a/pkg/executor/infoschema_reader.go
+++ b/pkg/executor/infoschema_reader.go
@@ -1741,11 +1741,11 @@ func (e *memtableRetriever) setDataForTiDBHotRegions(ctx sessionctx.Context) err
 	if !ok {
 		return errors.New("Information about hot region can be gotten only when the storage is TiKV")
 	}
-	allSchemas := ctx.GetInfoSchema().(infoschema.InfoSchema).AllSchemas()
 	tikvHelper := &helper.Helper{
 		Store:       tikvStore,
 		RegionCache: tikvStore.GetRegionCache(),
 	}
+	allSchemas := tikvHelper.FilterMemDBs(ctx.GetInfoSchema().(infoschema.InfoSchema).AllSchemas())
 	metrics, err := tikvHelper.ScrapeHotInfo(pdapi.HotRead, allSchemas)
 	if err != nil {
 		return err