From e0b3cc57f1af9f48d0191097bc03a77ed400276f Mon Sep 17 00:00:00 2001
From: Ti Chi Robot <ti-community-prow-bot@tidb.io>
Date: Tue, 16 Apr 2024 17:42:06 +0800
Subject: [PATCH] infoschema: don't display tables in MemDB when query
 `TIDB_HOT_REGIONS` (#52180) (#52205)

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

diff --git a/executor/infoschema_reader.go b/executor/infoschema_reader.go
index f4bdfe2a7a460..29938e2462fab 100644
--- a/executor/infoschema_reader.go
+++ b/executor/infoschema_reader.go
@@ -1864,11 +1864,11 @@ 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