Filebeat 5.2 processor doesn't work

[mikhail_mironov (Mikhail)]

This way works as expected:

filebeat:
  prospectors:
  - paths:
    - /var/log/test.log
    input_type: log 
    document_type: testlog
    close_renamed: true
    exclude_lines: ['MYKEYWORD']

output:
  file:
    path: "/tmp"
    filename: filebeat