From 12e527213f7083af782dac55132e8d226c13ca80 Mon Sep 17 00:00:00 2001
From: Yifan Xu <30385241+xuyifangreeneyes@users.noreply.github.com>
Date: Fri, 2 Dec 2022 03:14:01 +0800
Subject: [PATCH] statistics: enlarge capacity of ddlEventCh to 1000 (#39532)

ref pingcap/tidb#36004, ref pingcap/tidb#38189
---
 statistics/handle/handle.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/statistics/handle/handle.go b/statistics/handle/handle.go
index b483d23c1cdfb..8462799bf2a77 100644
--- a/statistics/handle/handle.go
+++ b/statistics/handle/handle.go
@@ -463,7 +463,7 @@ type sessionPool interface {
 func NewHandle(ctx sessionctx.Context, lease time.Duration, pool sessionPool, tracker sessionctx.SysProcTracker, serverIDGetter func() uint64) (*Handle, error) {
 	cfg := config.GetGlobalConfig()
 	handle := &Handle{
-		ddlEventCh:       make(chan *ddlUtil.Event, 100),
+		ddlEventCh:       make(chan *ddlUtil.Event, 1000),
 		listHead:         &SessionStatsCollector{mapper: make(tableDeltaMap), rateMap: make(errorRateDeltaMap)},
 		idxUsageListHead: &SessionIndexUsageCollector{mapper: make(indexUsageMap)},
 		pool:             pool,