wrong number of arguments (2 for 1) when using the %{field} syntax for the timezone setting

[dkirrane]

• Version: logstash:2.3.4-1
• Operating System: Ubuntu running Logstash Docker logstash:2.3.4-1

Logstash throws the following when I use a timezone => "%{timezone}" field which is part of the event:

{:timestamp=>"2016-09-12T11:26:34.487000+0000", :message=>"Failed parsing date from field", :field=>"log_timestamp", :value=>"2016-09-10 20:13:50,769", :exception=>"wrong number of arguments (2 for 1)", :config_parsers=>"YYYY-MM-dd HH:mm:ss,SSS", :config_locale=>"en", :level=>:warn}

filter {

    if [type]  == "app" {

        grok {
            match => [
                "message", "%{YEAR:year}-%{MONTHNUM:month}-%{MONTHDAY:day} %{TIME:time},%{INT:ms} %{DATA:logger} - %{GREEDYDATA:message}"
            ]
            overwrite => [ "message" ]
            add_field => [ "event_timestamp", "%{@timestamp}" ]
            add_field => [ "log_timestamp", "%{year}-%{month}-%{day} %{time},%{ms}" ]
            remove_field => [ "year","month","day","time","ms"]
        }

        date {
            match => [ "log_timestamp", "YYYY-MM-dd HH:mm:ss,SSS" ]
            locale => "en"
            timezone => "%{timezone}"
        }
    }
}

[dkirrane]

I think this maybe because of the timezone field generated by log-courier does not use joda timezone ids.
So opened an issue with log-courier
driskell/log-courier#345