logstash/logstash — pull request #387 by wiibaa (2013-03-04 05:57:14+00:00)
Title: KV Filter: Don't warn on nil source

Adding a simple kv filter to my config with a specific field as source config, I got my logstash logs filled with the following warning for all events without this field

kv filter has no support for this type of data {:type=>NilClass, :value=>nil, :level=>:warn}