Beats adds a tag

Hi,

I'm using Logstash 2.1.
This is my input conf:

input {
    beats {
        port => 5044
        type => "l2tcsv"
        codec => "plain"
    }
}

and in kibana, I see that it created a tag "beats_input_codec_plain_applied"
Why was this added and how can I get rid of it?
thanks?

Try the mutate filter's remove_tag directive:

filter {
  mutate {
    remove_tag => [ "beats_input_codec_plain_applied" ]
  }
}