Logstash crashed with the below exception.
No information available about this exception.
Thanks in advance.
NoMethodError: undefined method `map_cleanup' for nil:NilClass
start at /apps/logstash-2.2.2/vendor/bundle/jruby/1.9/gems/logstash-codec-multiline-2.0.9/lib/logstash/codecs/identity_map_codec.rb:55
A GitHub issue has been filed for this: