- Version: 6.4.2 - Operating System: RHEL - Config File: ``` input { generator { lines => [ "1|2:3" ] count => 1 } } filter { dissect { mapping => { "message" => "%{a}|%{b}" "b" => "%{c}:%{d}" } add_field => {"e" => "%{b}"} } } output { stdout { codec => rubydebug } } ``` - Expected output: ``` { "a": "1", "b": "2:3", "c": "2", "d": "3", "e": "2:3" } ``` - Actual output: ``` { "a": "1", "b": "2:3", "c": "2", "d": "3", "e": [ "2:3", "2:3" ] } ```