For managing data streams with DLM we chose to have one cluster setting that will determine the rollover conditions for all data streams. This PR introduces this cluster setting, it exposes it via the 3 existing APIs under the flag `include_defaults` and adjusts DLM to use it. The feature remains behind a feature flag.
We document that `GET /_index_template/...` accepts a comma-separated
list of template names but in fact today this API accepts only a single
name or pattern. Likewise `GET /_cat/templates/...` (at least it didn't
until #78829 but that's not released yet). This commit fixes the docs to
indicate these APIs accept only a single template name and also adds
some extra validation to reject requests containing a `,` since such a
request cannot match any actual templates.
It also adjusts `GET /_cat/templates` to use the filtering built into
`TransportGetComposableIndexTemplateAction` rather than retrieving all
templates and then filtering them on the coordinating node.
This commit adds the initial document for version two index templates. Since these are intended to
be used in favor of V1 index templates, this re-uses the anchors for index templates to point to the
V2 APIs, renaming the V1 template docs' anchors (this was a suggestion from the docs team).
There is more documentation that can be written, but this is a start.
Relates to #53101
The docs tests have recently been running much slower than before (see #49753).
The gist here is that with ILM/SLM we do a lot of unnecessary setup / teardown work on each
test. Compounded with the slightly slower cluster state storage mechanism, this causes the
tests to run much slower.
In particular, on RAMDisk, docs:check is taking
ES 7.4: 6:55 minutes
ES master: 16:09 minutes
ES with this commit: 6:52 minutes
on SSD, docs:check is taking
ES 7.4: ??? minutes
ES master: 32:20 minutes
ES with this commit: 11:21 minutes
Mary Gouseti
David Turner
James Rodewig
debadair
Lisa Cawley
Lee Hinman
Yannick Welsch
Julie Tibshirani
James Rodewig