The field was being indexed correctly but apparently it was added after the others so we had to tell kibana to refresh it's metadata for the metric indices. I just did it and it fixed the problem, you will now find the key.collection_id among the term aggregation options.
The field was being indexed correctly but apparently it was added after the others so we had to tell kibana to refresh it's metadata for the metric indices. I just did it and it fixed the problem, you will now find the
key.collection_idamong the term aggregation options.