{:timestamp=>"2016-08-06T11:45:25.875000+0800", :message=>"Got error to send bulk of actions: Cannot find Serializer for class: org.jruby.RubyObject", :level=>:error} {:timestamp=>"2016-08-06T11:45:25.875000+0800", :message=>"Failed to flush outgoing items", :outgoing_count=>80, :exception=>"JrJackson::ParseError", :backtrace=>["com/jrjackson/JrJacksonBase.java:78:in `generate'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/jrjackson-0.3.7/lib/jrjackson/jrjackson.rb:59:in `dump'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/multi_json-1.11.2/lib/multi_json/adapters/jr_jackson.rb:20:in `dump'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/multi_json-1.11.2/lib/multi_json/adapter.rb:25:in `dump'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/multi_json-1.11.2/lib/multi_json.rb:136:in `dump'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/elasticsearch-api-1.0.15/lib/elasticsearch/api/utils.rb:102:in `__bulkify'", "org/jruby/RubyArray.java:2414:in `map'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/elasticsearch-api-1.0.15/lib/elasticsearch/api/utils.rb:102:in `__bulkify'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/elasticsearch-api-1.0.15/lib/elasticsearch/api/actions/bulk.rb:82:in `bulk'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-1.1.0-java/lib/logstash/outputs/elasticsearch/protocol.rb:105:in `bulk'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-1.1.0-java/lib/logstash/outputs/elasticsearch.rb:548:in `submit'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-1.1.0-java/lib/logstash/outputs/elasticsearch.rb:572:in `flush'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/stud-0.0.21/lib/stud/buffer.rb:219:in `buffer_flush'", "org/jruby/RubyHash.java:1342:in `each'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/stud-0.0.21/lib/stud/buffer.rb:216:in `buffer_flush'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/stud-0.0.21/lib/stud/buffer.rb:193:in `buffer_flush'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/stud-0.0.21/lib/stud/buffer.rb:112:in `buffer_initialize'", "org/jruby/RubyKernel.java:1479:in `loop'", "/Users/ben/dev/logstash-1.5.6/vendor/bundle/jruby/1.9/gems/stud-0.0.21/lib/stud/buffer.rb:110:in `buffer_initialize'"], :level=>:warn}
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