tikv: update auto compaction config (#21656) #21725
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Summary of Changes
Hello @ti-chi-bot, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request updates the TiKV documentation to align with recent changes in its automatic compaction configuration. It clarifies the deprecation of previous compaction-related parameters and introduces a new set of parameters under gc.auto-compaction for more precise control over RocksDB compaction, ensuring the documentation accurately reflects the latest system behavior.
Highlights
- Configuration Parameter Deprecation: Several older
raftstore.region-compact-*configuration parameters have been deprecated in favor of new, more granular controls. - New Automatic Compaction Controls: New
gc.auto-compaction.*parameters have been introduced to provide refined control over automatic RocksDB compaction behavior. - Documentation Updates: The documentation has been updated across multiple files to reflect these configuration changes, including guidance on usage and version applicability.
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Code Review
This pull request updates the documentation for TiKV's auto compaction configuration. It correctly deprecates old raftstore.region-compact-* parameters and introduces new gc.auto-compaction.* parameters across several documentation files. The changes are generally well-written. I've provided a few minor suggestions to enhance clarity, consistency, and adherence to the documentation style guide.
| > When using the Compaction Filter mechanism, GC progress might be delayed, which can affect TiKV scan performance. If your workload contains a large number of coprocessor requests and you observe in the [**TiKV-Details > Coprocessor Detail**](/grafana-tikv-dashboard.md#coprocessor-detail) panel that the `next()` or `prev()` call count in **Total Ops Details** significantly exceeds three times the `processed_keys` calls, you can take the following actions: | ||
| > | ||
| > - For TiDB versions before v7.1.3, it is recommended to disable Compaction Filter to speed up GC. |
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To be more direct and adhere to the active voice principle, consider rephrasing this sentence.12
| > - For TiDB versions before v7.1.3, it is recommended to disable Compaction Filter to speed up GC. | |
| > - For TiDB versions before v7.1.3, disable Compaction Filter to speed up GC. |
Style Guide References
Footnotes
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| ### `bottommost-level-force` <span class="version-mark">New in v7.5.7 and v9.0.0</span> | ||
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| + Controls whether to force compaction on the bottommost files in RocksDB. |
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For clarity and consistency with other documentation, consider specifying 'level files' instead of just 'files'.1
| + Controls whether to force compaction on the bottommost files in RocksDB. | |
| + Controls whether to force compaction on the bottommost level files in RocksDB. |
Style Guide References
Footnotes
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Use consistent terminology. ↩
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/approve |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: Oreoxmt The full list of commands accepted by this bot can be found here. The pull request process is described here
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In response to a cherrypick label: new pull request created to branch |
Signed-off-by: ti-chi-bot <[email protected]>
This is an automated cherry-pick of #21656
First-time contributors' checklist
What is changed, added or deleted? (Required)
Which TiDB version(s) do your changes apply to? (Required)
Tips for choosing the affected version(s):
By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.
For details, see tips for choosing the affected versions (in Chinese).
What is the related PR or file link(s)?
Do your changes match any of the following descriptions?