From e8fd99ddcb784efd86cad5bf1548915059139a13 Mon Sep 17 00:00:00 2001
From: Carlos Eduardo Moreira dos Santos <cems@cemshost.com.br>
Date: Sun, 30 Oct 2016 22:55:18 -0200
Subject: [PATCH] Fix bug when bytes_read is None

---
 sparklogstats/logparser.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sparklogstats/logparser.py b/sparklogstats/logparser.py
index 8900bc0..5c22a1b 100644
--- a/sparklogstats/logparser.py
+++ b/sparklogstats/logparser.py
@@ -209,7 +209,8 @@ def end(self):
 
     @property
     def bytes_read(self):
-        return sum(t.metrics.bytes_read for t in self.successful_tasks)
+        return sum(t.metrics.bytes_read for t in self.successful_tasks
+                   if t.metrics.bytes_read)
 
     @property
     def bytes_written(self):