[DOCS] CCS stats median should be average

[consulthys]

Elasticsearch Version

8.16+

Installed Plugins

Java Version

bundled

OS Version

Problem Description

In the official documentation about the Cluster Stats API, the response contains different *.took*.avg values in the css._search section that are described as median instead of average. Median and average are different, and it was confirmed that the actual value behind the avg value is truly an average and not a median.

Hence, we should correct the following fields descriptions:

• ccs._search.took.avg: (integer) The average time taken to execute a cross-cluster search request, in milliseconds.
• ccs._search.took_mrt_true.avg: (integer) The average time taken to execute a cross-cluster search request, in milliseconds.
• ccs._search.took_mrt_false.avg: (integer) The average time taken to execute a cross-cluster search request, in milliseconds.
• ccs._search.clusters.took.avg: (integer) The average time taken to execute a cross-cluster search request, in milliseconds.

Another field called remotes_per_search_avg is properly defined as The average number of remote clusters that were queried in a single cross-cluster search request, so all *avg fields should have a consistent description.

Steps to Reproduce

Go to the Cluster Stats API documentation

Logs (if relevant)

None

[elasticsearchmachine]

Pinging @elastic/es-search-foundations (Team:Search Foundations)

[elasticsearchmachine]

Pinging @elastic/es-docs (Team:Docs)