Mutate - Split - datatype remains string

[varshesh (Varshesh Badheka)]

Hi,

I have a field with comma separated city names. I have applied simple split as below.

filter {
mutate { split => { "city" => ',' } }
}

But, in index mapping, the data type displayed is string. Can someone guide on this please.

Thanks,

Varsh..

[philippkahr]

Hi,

if you could post an example that would be helpful. The City is always a string, a string is just an char array.

What kind of output where you expecting?

[varshesh (Varshesh Badheka)]

Hi,

I think it was my mistake! The issue is solved. It is storing as array only.
BTW, do you know how can I get a value from an array matching a key? I mean, I am storing some values in index, for which I have ids, say department id. I have a list/master of department, where the id->department name is available. I need to store the department name in the index along with department id.

I tried a few filters like, translate and a couple of others, nothing works man.. Kind of stuck up on this since a few hours now !!

Your help will be great !

Thanks,

Varsh..

[philippkahr]

You should be able to do that with the translate filter in logstash

https://www.elastic.co/guide/en/logstash/current/plugins-filters-translate.html#plugins-filters-translate-dictionary

Let's say you have the following key values.

103445: "Department 1"
10230: "Departement 2"

your translate should look like this

translate{
  field => "department_id"
  destination => "departement_name"
  dictionary_path => "departements.yml"
}