From 68eecc2b4a817497f5a9aacd650a812c48cdba96 Mon Sep 17 00:00:00 2001
From: winkyao <golangwink@gmail.com>
Date: Mon, 28 Nov 2022 16:04:31 -0800
Subject: [PATCH] session: change parser.New to get a parser from pool

---
 session/bootstrap.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/session/bootstrap.go b/session/bootstrap.go
index 678cc2c1832a3..ce25efa427349 100644
--- a/session/bootstrap.go
+++ b/session/bootstrap.go
@@ -2223,7 +2223,8 @@ func rebuildAllPartitionValueMapAndSorted(s *session) {
 		PartitionExpr() (*tables.PartitionExpr, error)
 	}
 
-	p := parser.New()
+	p := parserPool.Get().(*parser.Parser)
+	defer parserPool.Put(p)
 	is := s.GetInfoSchema().(infoschema.InfoSchema)
 	for _, dbInfo := range is.AllSchemas() {
 		for _, t := range is.SchemaTables(dbInfo.Name) {