From 72a9984d8f28933fadf0f186bc40cc3454fc9353 Mon Sep 17 00:00:00 2001
From: Li Ma <skywalker.nick@gmail.com>
Date: Tue, 17 Mar 2015 00:07:12 -0700
Subject: [PATCH] Fix changing keys during iteration in matchmaker heartbeat
When starting heartbeat in matchmaker-redis, keys may be changed
during iteration and a runtime exception is thrown as follows:
RuntimeError: dictionary changed size during iteration
Change-Id: I016a449674619294196055614c62c2856002291c
Closes-Bug: #1432966
---
oslo_messaging/_drivers/matchmaker.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/oslo_messaging/_drivers/matchmaker.py b/oslo_messaging/_drivers/matchmaker.py
index bea3f7f72..82b0fbd2b 100644
--- a/oslo_messaging/_drivers/matchmaker.py
+++ b/oslo_messaging/_drivers/matchmaker.py
@@ -164,7 +164,7 @@ class HeartbeatMatchMakerBase(MatchMakerBase):
Use start_heartbeat to spawn a heartbeat greenthread,
which loops this method.
"""
- for key, host in self.host_topic:
+ for key, host in self.host_topic.keys():
self.ack_alive(key, host)
def ack_alive(self, key, host):