Logstash exits if attempting to create directory when file exists in path

From: https://github.com/elastic/logstash/issues/5577

Version: 2.3.3
Operating System: CentOS
Config File Original:

input {
  beats {
    port => 5044
  }
}

output {
  file {
    path => "/var/www/html/logs/%{host}/%{+YYYY-MM-dd}"
    codec => line { format => "%{message}" }
  }
}

Modified to utilize directory of same name as existing file.

input {
  beats {
    port => 5044
  }
}

output {
  file {
    path => "/var/www/html/logs/%{host}/%{+YYYY-MM-dd}/%{source}"
    codec => line { format => "%{message}" }
  }
}

Steps to Reproduce: Write out a file with the file plugin. Then adjust the configuration for Logstash to attempt to create a directory with the same name as the log file that was created previously.

Logstash appears to exit with the following info. Expected situation would be to throw an error on the console, but not exit the process.

Errno::EEXIST: File exists - /var/www/html/logs/nfvsdn-06/2016-06-30
                 mkdir at org/jruby/RubyDir.java:458
              fu_mkdir at /opt/logstash/vendor/jruby/lib/ruby/1.9/fileutils.rb:247
               mkdir_p at /opt/logstash/vendor/jruby/lib/ruby/1.9/fileutils.rb:221
          reverse_each at org/jruby/RubyArray.java:1693
               mkdir_p at /opt/logstash/vendor/jruby/lib/ruby/1.9/fileutils.rb:219
                  each at org/jruby/RubyArray.java:1613
               mkdir_p at /opt/logstash/vendor/jruby/lib/ruby/1.9/fileutils.rb:205
                  open at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-file-2.2.5/lib/logstash/outputs/file.rb:253
           write_event at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-file-2.2.5/lib/logstash/outputs/file.rb:162
                  call at org/jruby/RubyProc.java:281
                encode at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-codec-line-2.1.2/lib/logstash/codecs/line.rb:54
               receive at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-file-2.2.5/lib/logstash/outputs/file.rb:129
         multi_receive at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.3-java/lib/logstash/outputs/base.rb:83
                  each at org/jruby/RubyArray.java:1613
         multi_receive at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.3-java/lib/logstash/outputs/base.rb:83
  worker_multi_receive at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.3-java/lib/logstash/output_delegator.rb:130
         multi_receive at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.3-java/lib/logstash/output_delegator.rb:114
          output_batch at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.3-java/lib/logstash/pipeline.rb:301
                  each at org/jruby/RubyHash.java:1342
          output_batch at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.3-java/lib/logstash/pipeline.rb:301
           worker_loop at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.3-java/lib/logstash/pipeline.rb:232
         start_workers at /opt/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.3-java/lib/logstash/pipeline.rb:201

logstash-plugins / logstash-output-file

Logstash exits if attempting to create directory when file exists in path #45