Hi, Using scripted metrics aggregation in ElasticSearch, I created a metric that returns the "duration" between the oldest and the newest document in a bucket, given a date field (useful to know, for example, a session duration from logs). These scripts work well, and I get a result very similar t…

Add a custom metric to Kibana (4.1)

tbragin (Tanya Bragin) March 18, 2016, 2:09pm 2

Kibana does not support creating fields using scripted metric aggregations:

You might be able to use JSON input in aggregations to do something fancy like that -- see one example here: Display concurrency in data on Kibana

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