Feedback on Data Service Metrics | Couchbase Docs

For the following Page and many others:
https://docs.couchbase.com/server/current/metrics-reference/data-service-metrics.html#

There are 363 occurrences of: "description: NA" for the description of statistics.

Some of the stat names are fairly cryptic and it is hard to derive any meaning without direct contact with engineering or support and even then sometimes it appears that there is alot of guess work.

These all seem like they are tracking fairly similar things. What that is? I don't know but I would like to figure it out from the documentation which is a dead end.

kv_ep_db_data_size_bytes
Units: NA
Labels: bucket
Description: NA

kv_ep_db_file_size_bytes
Units: NA
Labels: bucket
Description: NA

kv_ep_db_prepare_size_bytes
Units: NA
Labels: bucket
Description: NA

Reporter: Brian Powers
E-mail: brian.powers@couchbase.com