capistrant opened a new pull request, #20199: URL: https://github.com/apache/druid/pull/20199
### Description `tier/used/capacity` is a new coordinator metric that emits with a `tier` and optional `tierAlias` (if you enabled aliasing) dimension. This metric is helpful for monitoring the actually realized loaded bytes on a tier. Especially in a world of partial loads, where your tier may "require" a very high amount of storage to store everything on disk, but if you are using virtual storage and partial loads, you care more about the actual realized bytes on your historicals. also adds missing doc for `tier/storage/capacity` this was in the last druid release but not documented beyond release notes. #### Release note <!-- Give your best effort to summarize your changes in a couple of sentences aimed toward Druid users. If your change doesn't have end user impact, you can skip this section. For tips about how to write a good release note, see [Release notes](https://github.com/apache/druid/blob/master/CONTRIBUTING.md#release-notes). --> New coordinator metric `tier/used/capacity` that helps track the actual bytes used per tier in a cluster <hr> ##### Key changed/added classes in this PR * `PrepareBalancerAndLoadQueues` <hr> <!-- Check the items by putting "x" in the brackets for the done things. Not all of these items apply to every PR. Remove the items which are not done or not relevant to the PR. None of the items from the checklist below are strictly necessary, but it would be very helpful if you at least self-review the PR. --> This PR has: - [ ] been self-reviewed. - [ ] added documentation for new or modified features or behaviors. - [ ] a release note entry in the PR description. - [ ] added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links. - [ ] added or updated version, license, or notice information in [licenses.yaml](https://github.com/apache/druid/blob/master/dev/license.md) - [ ] added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader. - [ ] added unit tests or modified existing tests to cover new code paths, ensuring the threshold for [code coverage](https://github.com/apache/druid/blob/master/dev/code-review/code-coverage.md) is met. - [ ] added integration tests. - [ ] been tested in a test Druid cluster. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
