Add tidb index usage limitation for valid stats (#20833) #20912
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Signed-off-by: Yang Keao <[email protected]>
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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!
Summary of Changes
This pull request adds a limitation to the tidb index usage, clarifying that index usage is only recorded if the table has valid statistics. This change aligns the documentation with the behavior described in index-advisor.md. The changes affect the information-schema-tidb-index-usage.md file and are being applied to multiple versions of TiDB (master, v9.0, v8.5, and v8.1).
Highlights
- Documentation Update: Adds a note to the
information-schema-tidb-index-usage.mdfile stating that index usage is only recorded if the table has valid statistics. - Consistency: Ensures the documentation aligns with the actual behavior of TiDB and the description in
index-advisor.md.
Changelog
- information-schema/information-schema-tidb-index-usage.md
- Added a statement clarifying that index usage is only recorded for tables with valid statistics (line 104).
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Code Review
The pull request adds a limitation to the tidb usage limitation, aligning the description with the "index-advisor.md". The change seems straightforward and necessary for clarity.
Merge Readiness
The pull request appears to be well-written and addresses a clear need for documentation accuracy. There are no critical or high severity issues. I am unable to approve the pull request, and recommend that the author seek additional review and approval before merging.
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/approve |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: qiancai The full list of commands accepted by this bot can be found here. The pull request process is described here
Needs approval from an approver in each of these files:
Approvers can indicate their approval by writing |
…fts-1 * commit 'c3ec7513da16bfb6c84af93213c0006040dbd867': ticdc: add [[filter.event-filters]] to the toml example (#20921) (#20925) Add tidb index usage limitation for valid stats (#20833) (#20912) tidb-cloud: update LOAD DATA INFILE description (#20917) (#20918) Update pad attribute where needed (#20823) (#20910) Add restriction for IMPORT INTO regarding empty (#20562) (#20908) tikv: recorrect the settings of some configs and supplement missing annotations for several configs. (#20871) (#20899) planner: add doc for `tidb_ignore_inlist_plan_digest`. (#20870) (#20890) JDBC URL: update the letter case for defaultFetchSize (#20884) (#20887) fix(pd): add missing configuration items for PD (#20883) (#20894) hardware-and-software-requirements: update Kylin Euler to Kylin (#20874) (#20881) add FAQs about collation for JDBC connections (#20848) (#20869) pd configuration: add dashboard.disable-custom-prom-addr (#20853) (#20857) releases: add one br entry to v8.1.2 (#20861) (#20864) toc: add TiDB release support policy (#19119) (#20859)
This is an automated cherry-pick of #20833
First-time contributors' checklist
What is changed, added or deleted? (Required)
Add a limitation to the tidb usage limitation. The description is aligned with the "index-advisor.md":
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.
What is the related PR or file link(s)?
Do your changes match any of the following descriptions?