reduce default sample rate

blampe · abhinav · commit 1d3b5f807d1f · 2016-03-17T13:49:43.000-07:00
diff --git a/CHANGES.rst b/CHANGES.rst
@@ -10,6 +10,7 @@ Changes by Version
   advertisement.
 - Handshake timeouts were incorrectly being surfaced as StreamClosedError but
   are now raised as NetworkError.
+- Reduced default tracing sample rate from 100% to 1%.
 
 
 0.21.9 (2016-03-14)
diff --git a/tchannel/zipkin/zipkin_trace.py b/tchannel/zipkin/zipkin_trace.py
@@ -29,7 +29,7 @@
 class ZipkinTraceHook(EventHook):
     """generate zipkin-style span for tracing"""
 
-    DEFAULT_RATE = 1.0
+    DEFAULT_RATE = 0.01
 
     def __init__(self, tchannel=None, dst=None, sample_rate=None):
         """Log zipkin style trace.
