I tried to use the same method as for arrays for a hash, that in our case could some times be empty: if [geoip] == [] { mutate { remove_field => ["geoip"] } } Unfortunately, the check is not working and the empty geoip-hashes slip into the outputs. I then tried to c…

How to check, if a hash is empty (no keys)

magnusbaeck (Magnus Bäck) July 14, 2017, 7:37pm 2

I don't think the Logstash configuration language really has hash literals in the same way it has array literals in which case this isn't possible except with a ruby filter.

Never ending story: how to check and remove empty fields, arrays etc

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