From a35d5e30d9f9220067866a7e158097d575f7ac4c Mon Sep 17 00:00:00 2001
From: Evan Tschannen <ejt@apple.com>
Date: Tue, 10 Jul 2018 13:26:28 -0700
Subject: [PATCH] Added a SevError trace event in case peer references becomes
 negative

---
 fdbrpc/FlowTransport.actor.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fdbrpc/FlowTransport.actor.cpp b/fdbrpc/FlowTransport.actor.cpp
index 7452f0f605..90231769b8 100644
--- a/fdbrpc/FlowTransport.actor.cpp
+++ b/fdbrpc/FlowTransport.actor.cpp
@@ -829,6 +829,9 @@ void FlowTransport::removePeerReference( const Endpoint& endpoint, NetworkMessag
 	Peer* peer = self->getPeer(endpoint.address, false);
 	if(peer) {
 		peer->peerReferences--;
+		if(peer->peerReferences < 0) {
+			TraceEvent(SevError, "InvalidPeerReferences").detail("References", peer->peerReferences).detail("Address", endpoint.address).detail("Token", endpoint.token);
+		}
 		if(peer->peerReferences == 0 && peer->reliable.empty() && peer->unsent.empty()) {
 			peer->incompatibleDataRead.trigger();
 		}