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planner: add doc for tidb_ignore_inlist_plan_digest. #20870

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@qiancai qiancai commented Apr 28, 2025

First-time contributors' checklist

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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.

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@qiancai qiancai added area/planner Indicates that the Issue or PR belongs to the area of SQL planner or optimizer. translation/from-docs-cn This PR is translated from a PR in pingcap/docs-cn. labels Apr 28, 2025
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Hello @qiancai, 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 new file named temp.md containing the text "This is a test file.". The purpose of this addition is not explicitly stated in the provided information, but based on the file content, it seems to be for testing purposes.

Highlights

  • New File Creation: A new Markdown file named temp.md has been created.
  • Content Addition: The file temp.md contains the simple text "This is a test file."

Changelog

  • temp.md
    • Created a new file with the content 'This is a test file.'
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@ti-chi-bot ti-chi-bot bot added the size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. label Apr 28, 2025
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Code Review

The pull request adds a test file. The change itself is simple, but I'll review it to ensure it aligns with the project's documentation guidelines and style.

Merge Readiness

The pull request introduces a new test file. Given the simplicity of the change, it appears to be mergeable. However, I am unable to directly approve the pull request, and other reviewers should also examine the code before merging. Since there are no critical or high severity issues, the pull request can be merged after addressing the low severity comments.

@ti-chi-bot ti-chi-bot bot added size/S Denotes a PR that changes 10-29 lines, ignoring generated files. and removed size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Apr 28, 2025
@qiancai qiancai requested a review from AilinKid April 28, 2025 08:56
@qiancai qiancai added needs-cherry-pick-release-8.1 Should cherry pick this PR to release-8.1 branch. needs-cherry-pick-release-8.3 Should cherry pick this PR to release-8.3 branch. needs-cherry-pick-release-8.5 Should cherry pick this PR to release-8.5 branch. needs-cherry-pick-release-8.4 Should cherry pick this PR to release-8.4 branch. labels Apr 28, 2025
- This variable controls whether TiDB ignores the element differences in the `IN` list across different queries when generating Plan Digests.

- When it is the default value `OFF`, TiDB ignores the element differences in the `IN` list (including the difference in the number of elements) when generating Plan Digests.
- When it is set to `ON`, TiDB includes the elements (as well as the number of elements) in the `IN` list as part of Plan Digests. The element differences in the `IN` list result in different Plan Digests.
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on 应该是忽略差异导致相同的 digest

- Default value: `OFF`
- This variable controls whether TiDB ignores the element differences in the `IN` list across different queries when generating Plan Digests.

- When it is the default value `OFF`, TiDB ignores the element differences in the `IN` list (including the difference in the number of elements) when generating Plan Digests.
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off 应该是不忽略,所以不同的 inlist 会导致不同的 digest

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ti-chi-bot bot commented Apr 29, 2025

@AilinKid: adding LGTM is restricted to approvers and reviewers in OWNERS files.

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@qiancai qiancai self-assigned this Apr 29, 2025
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ti-chi-bot bot commented Apr 30, 2025

[LGTM Timeline notifier]

Timeline:

  • 2025-04-30 02:17:22.5940056 +0000 UTC m=+1013186.405795982: ☑️ agreed by Oreoxmt.

@ti-chi-bot ti-chi-bot bot added the needs-1-more-lgtm Indicates a PR needs 1 more LGTM. label Apr 30, 2025
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qiancai commented Apr 30, 2025

/approve

@qiancai qiancai added the lgtm label Apr 30, 2025
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiancai

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@ti-chi-bot ti-chi-bot bot added the approved label Apr 30, 2025
@ti-chi-bot ti-chi-bot bot merged commit 6b8e13b into pingcap:master Apr 30, 2025
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In response to a cherrypick label: new pull request created to branch release-8.1: #20888.

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In response to a cherrypick label: new pull request created to branch release-8.3: #20889.

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In response to a cherrypick label: new pull request created to branch release-8.5: #20890.

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In response to a cherrypick label: new pull request created to branch release-8.4: #20891.

breezewish added a commit that referenced this pull request May 8, 2025
…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)
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approved area/planner Indicates that the Issue or PR belongs to the area of SQL planner or optimizer. lgtm needs-1-more-lgtm Indicates a PR needs 1 more LGTM. needs-cherry-pick-release-8.1 Should cherry pick this PR to release-8.1 branch. needs-cherry-pick-release-8.3 Should cherry pick this PR to release-8.3 branch. needs-cherry-pick-release-8.4 Should cherry pick this PR to release-8.4 branch. needs-cherry-pick-release-8.5 Should cherry pick this PR to release-8.5 branch. size/S Denotes a PR that changes 10-29 lines, ignoring generated files. translation/from-docs-cn This PR is translated from a PR in pingcap/docs-cn.
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