From 34f2e70f0c9a84690400a7fd098f1d5c898b2442 Mon Sep 17 00:00:00 2001
From: gueFDF <3237455241@qq.com>
Date: Wed, 26 Apr 2023 18:23:04 +0800
Subject: [PATCH] nsqd:It is more efficient to deal with the case where the
 sequence is used up here

---
 nsqd/guid.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/nsqd/guid.go b/nsqd/guid.go
index 89ba83e9e..52318ee3a 100644
--- a/nsqd/guid.go
+++ b/nsqd/guid.go
@@ -63,7 +63,10 @@ func (f *guidFactory) NewGUID() (guid, error) {
 		f.sequence = (f.sequence + 1) & sequenceMask
 		if f.sequence == 0 {
 			f.Unlock()
-			return 0, ErrSequenceExpired
+			//wait for next millisecond
+			for ts <= f.lastTimestamp {
+				ts = time.Now().UnixNano() >> 20
+			}
 		}
 	} else {
 		f.sequence = 0