From b69690cdc1c181de348f0849be2e48ff08d2f9a7 Mon Sep 17 00:00:00 2001
From: Han Fei <hanfei19910905@gmail.com>
Date: Thu, 11 May 2017 12:39:24 +0800
Subject: [PATCH] ddl: speed up aysc ddl event notify for test. (#3233)

---
 ddl/ddl.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ddl/ddl.go b/ddl/ddl.go
index 24618e033a..063e3f5251 100644
--- a/ddl/ddl.go
+++ b/ddl/ddl.go
@@ -190,6 +190,14 @@ func (d *ddl) RegisterEventCh(ch chan<- *Event) {
 // give up notify and log it.
 func (d *ddl) asyncNotifyEvent(e *Event) {
 	if d.ddlEventCh != nil {
+		if d.lease == 0 {
+			// If lease is 0, it's always used in test.
+			select {
+			case d.ddlEventCh <- e:
+			default:
+			}
+			return
+		}
 		for i := 0; i < 10; i++ {
 			select {
 			case d.ddlEventCh <- e: