--- DelaysAndMaxRetry.java	2017-12-15 14:09:36.611103100 +0900
+++ DelaysAndMaxRetry.java.fix	2017-12-15 14:25:23.413328000 +0900
@@ -81,6 +81,7 @@
 
         List<String> delayStrings = Splitter.on(',')
             .omitEmptyStrings()
+            .trimResults()
             .splitToList(delaysAsString);
 
         ImmutableList.Builder<Delay> builder = ImmutableList.builder();