From 5191aae3dfed821143449192ba9294255884aa8c Mon Sep 17 00:00:00 2001
From: Irine Sistiana <49315432+IrineSistiana@users.noreply.github.com>
Date: Tue, 3 Oct 2023 23:57:36 +0800
Subject: [PATCH] transport: fixed pipeline conn leaking

---
 pkg/upstream/transport/pipeline.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkg/upstream/transport/pipeline.go b/pkg/upstream/transport/pipeline.go
index 70f9c8d53..fdcb55a8d 100644
--- a/pkg/upstream/transport/pipeline.go
+++ b/pkg/upstream/transport/pipeline.go
@@ -176,6 +176,7 @@ func (t *PipelineTransport) pickPipelineConnLocked() (int, *pipelineConn) {
 		pci, pc := sliceRandGet(t.activeConns, t.r)
 		if pc != nil && pc.dc.isClosed() { // closed conn, delete it and retry
 			sliceDel(&t.activeConns, pci)
+			delete(t.conns, pc)
 			continue
 		}
 		return pci, pc // conn pool is empty or we got a pc