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What this PR does / why we need it:

Updates the Release Notes for Loki 3.6 release.

@JStickler JStickler added the type/docs Issues related to technical documentation; the Docs Squad uses this label across many repositories label Nov 5, 2025
@JStickler JStickler requested a review from a team as a code owner November 5, 2025 22:29
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github-actions bot commented Nov 5, 2025

💻 Deploy preview available (docs: Loki 3.6 Release Notes):

@JStickler JStickler marked this pull request as draft November 5, 2025 22:32
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sugaf1204 commented Nov 6, 2025

In version 3.5, queries become significantly slower when logs have a lot of structured metadata. This issue is resolved in #17332, would you consider merge it into the version 3.6 release?

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@sugaf1204 It's very likely that #17332 IS part of the 3.6 release. It looks like there was a glitch in our automation and the release PR doesn't list the entire CHANGELOG. I'm currently trying to track down the missing PRs that need to be documented in the Release Notes.

@JStickler JStickler marked this pull request as ready for review November 13, 2025 00:01

Key features in Loki 3.6.0 include the following:

* **Horizontally scalable compactor:** The Compactor in Loki is a singleton service that compacts the index and applies retention, including processing delete requests. Because it can only be scaled vertically, it limits how many resources you can add to speed things up when the workload increases in bigger cells. This release adds a horizontally scalable compactor, to speed up processing large delete requests or catching up if there has been a lag in processing for some reason.
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I think we should make it clearer that, currently, the horizontally scalable compactor only delegates deletion work to the workers. It continues to perform compaction and apply retention in the main compactor. We can point to our documentation for more details.

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3 participants