Just wondering what the status of the _bench API endpoint? it seems totally missing from official documentation, but lof of books/blog is refering it.
Do you mean the REST
_bench action of this community plugin https://github.com/codelibs/elasticsearch-benchmark-suite ?
It was written for Elasticsearch 1.3.1 and is quite old now.
I don't know, was reading this book:
And found a reference to "_bench" endpoint.
Oh! The benchmark API was an experimental feature, it was so experimental I didn't ever notice.
It was moved to a feature branch in March 2015 https://github.com/elastic/elasticsearch/pull/10184 that means, it is no longer included in Elasticsearch 2.x