Signed-off-by: YAMAMOTO Takashi <[email protected]>
---
 ryu/lib/hub.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ryu/lib/hub.py b/ryu/lib/hub.py
index 44e5fea..49f3a9c 100644
--- a/ryu/lib/hub.py
+++ b/ryu/lib/hub.py
@@ -47,6 +47,9 @@ if HUB_TYPE == 'eventlet':
             try:
                 func(*args, **kwargs)
             except:
+                # log uncaught exception.
+                # note: this is an intentional divergence from gevent
+                # behaviour.  gevent silently ignores such exceptions.
                 LOG.error('hub: uncaught exception: %s',
                           traceback.format_exc())
 
-- 
1.8.0.1


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