From e6d0d2818a7380920b806ae629320500e739bd5c Mon Sep 17 00:00:00 2001
From: Menghan Li <menghanl@google.com>
Date: Tue, 28 Sep 2021 13:55:29 -0700
Subject: [PATCH] internal: log SubConn type if it's not the expected type
 (#4813)

---
 picker_wrapper.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/picker_wrapper.go b/picker_wrapper.go
index 0878ada9..e8367cb8 100644
--- a/picker_wrapper.go
+++ b/picker_wrapper.go
@@ -144,7 +144,7 @@ func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer.
 
 		acw, ok := pickResult.SubConn.(*acBalancerWrapper)
 		if !ok {
-			logger.Error("subconn returned from pick is not *acBalancerWrapper")
+			logger.Errorf("subconn returned from pick is type %T, not *acBalancerWrapper", pickResult.SubConn)
 			continue
 		}
 		if t := acw.getAddrConn().getReadyTransport(); t != nil {