Open
Description
Type of issue
Inaccurate
What documentation page is affected
https://www.elastic.co/docs/reference/logstash/plugins/plugins-filters-drop
What happened?
The drop filter plugin documentation includes a section listing common options, such as add_field or drop_field, which do not have the expected effect because the entire event is dropped. Specifically, the inclusion of the drop_field option can mislead users into thinking that only a specific field will be dropped, rather than the entire event. Since the drop filter removes everything that reaches it, any drop_field specified will not isolate the removal to just that field.
Additional info
Instead of using drop_field within the drop filter, it should instead be used within the mutate filter.