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  1. 14:08:44 +0100, @flush_interval=1, @stopping=#<Concurrent::AtomicBoolean:0x1e578f8>, @buffer=[], @flush_thread=#<Thread:0xe4a31e run>>", :interval=>1, :level=>:info, :file=>"logstash/outputs/elasticsearch/buffer.rb", :line=>"90", :method=>"interval_flush"}
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  3. {:timestamp=>"2016-01-08T14:08:47.930000+0100", :message=>"Flushing buffer at interval", :instance=>"#<LogStash::Outputs::ElasticSearch::Buffer:0x11a1c6 @operations_mutex=#<Mutex:0xd65474>, @max_size=500, @operations_lock=#<Java::JavaUtilConcurrentLocks::ReentrantLock:0xe9cab6>, @submit_proc=#<Proc:0x27c225@/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-2.2.0-java/lib/logstash/outputs/elasticsearch/common.rb:55>, @logger=#<Cabin::Channel:0x304be1 @metrics=#<Cabin::Metrics:0x16892b @metrics_lock=#<Mutex:0x1c4a100>, @metrics={}, @channel=#<Cabin::Channel:0x304be1 ...>>, @subscriber_lock=#<Mutex:0x18e73f7>, @level=:debug, @subscribers={12590=>#<Cabin::Outputs::IO:0x112c5f6 @io=#<File:/var/log/logstash/logstash.log>, @lock=#<Mutex:0x18abc75>>}, @data={}>, @last_flush=2016-01-08 14:08:46 +0100, @flush_interval=1, @stopping=#<Concurrent::AtomicBoolean:0x1e578f8>, @buffer=[], @flush_thread=#<Thread:0xe4a31e run>>", :interval=>1, :level=>:info, :file=>"logstash/outputs/elasticsearch/buffer.rb", :line=>"90", :method=>"interval_flush"}
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  150. {:timestamp=>"2016-01-08T14:11:16.028000+0100", :message=>"Flushing buffer at interval", :instance=>"#<LogStash::Outputs::ElasticSearch::Buffer:0x11a1c6 @operations_mutex=#<Mutex:0xd65474>, @max_size=500, @operations_lock=#<Java::JavaUtilConcurrentLocks::ReentrantLock:0xe9cab6>, @submit_proc=#<Proc:0x27c225@/opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-2.2.0-java/lib/logstash/outputs/elasticsearch/common.rb:55>, @logger=#<Cabin::Channel:0x304be1 @metrics=#<Cabin::Metrics:0x16892b @metrics_lock=#<Mutex:0x1c4a100>, @metrics={}, @channel=#<Cabin::Channel:0x304be1 ...>>, @subscriber_lock=#<Mutex:0x18e73f7>, @level=:debug, @subscribers={12590=>#<Cabin::Outputs::IO:0x112c5f6 @io=#<File:/var/log/logstash/logstash.log>, @lock=#<Mutex:0x18abc75>>}, @data={}>, @last_flush=2016-01-08 14:11:15 +0100, @flush_interval=1, @stopping=#<Concurrent::AtomicBoolean:0x1e578f8>, @buffer=[], @flush_thread=#<Thread:0xe4a31e run>>", :interval=>1, :level=>:info, :file=>"logstash/outputs/elasticsearch/buffer.rb", :line=>"90", :method=>"interval_flush"}
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