From aa740eed3e7be8dafc7adcb07910963c357f5787 Mon Sep 17 00:00:00 2001
From: kwen <38367518+kwenzh@users.noreply.github.com>
Date: Thu, 17 Apr 2025 19:30:59 +0800
Subject: [PATCH] Add check to the master address has been obtained

Before closing the done channel, add a check to see if the master address has been obtained. If the master address has been obtained, then proceed with the subsequent operations.
---
 sentinel.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sentinel.go b/sentinel.go
index 063866353..77beb7b86 100644
--- a/sentinel.go
+++ b/sentinel.go
@@ -618,6 +618,9 @@ func (c *sentinelFailover) MasterAddr(ctx context.Context) (string, error) {
 		}
 		return "", errors.New("redis: all sentinels specified in configuration are unreachable")
 	case err := <-errCh:
+		if masterAddr != "" {
+			return masterAddr, nil
+		}
 		return "", err
 	}
 }