Service never stop

[felipegs]

I am using Amazon Linux 2015, Logstash 1.5.1 and this configuration file.

input {
   zeromq {
      address => "tcp://127.0.0.1:8006"
      mode => "client"
      topology => "pubsub"
   }
}
filter {
   json {
      source => "message"
      target => "message"
   }
   date {
      match => ["_timestamp", "UNIX_MS"]
      remove_field => ["_timestamp"]
   }
   mutate {
     merge => ["tags", "[_tags]"]
     remove_field => "[_tags]"
   }
   geoip {
      source => "[_origin]"
      target => "_geoip"
   }
   useragent {
      source => "[_userAgent]"
      target => "_parsedUserAgent"
   }
}
output {
  if [_organization] and [_organization][slug] =~ /.+/ and [_api] and [_api][id] {
    elasticsearch {
      index => "events-%{[_organization][slug]}-%{[_api][id]}-%{+YYYYMMdd}"
      document_type => "events"
      template_name => "logstash"
      manage_template => false
      cluster => "elasticsearch_felipe"
    }

    if [_clientApplication] and [_clientApplication][id] {
      http {
        http_method => "put"
        url => "http://localhost:9200/events-%{[_organization][slug]}-%{[_api][id]}-%{+YYYYMMdd}/_alias/events-by-client-app-%{[_organization][slug]}-%{[_clientApplication][id]}-%{+YYYYMMdd}"
        message => '{ "filter" :  { "term" :  { "_clientApplication.id" :  "%{[_clientApplication][id]}"  } } }'
        format => "message"
        content_type => "application/json"
        workers => 2
      }

    }
  }
} 

When I try to stop logstash service sometimes it never dies and sometimes I have this error
logstash-plugins/logstash-input-zeromq#5

[jordansissel]

Is this a separate problem than logstash-plugins/logstash-input-zeromq#5?