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docs: use "node count" or "number of nodes" instead of "node number" (#24360) - #24476

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Oct 16, 2026
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@ti-chi-bot ti-chi-bot commented Oct 16, 2026 •

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This is an automated cherry-pick of #24360

What is changed, added, or deleted? (Required)

Several docs use "node number" to mean the number of nodes, for example "Consider increasing the node number or node size for TiDB" and the heading "Change node number". "Node number" reads more naturally as a node's ID or ordinal position (node #1, node #2) than as a count. The section itself already says "You can increase or decrease the number of TiDB, TiKV, or TiFlash nodes".

The ambiguity has already caused mistranslations. The Japanese docs (i18n-ja-release-8.5) render this phrase as 「ノード番号」 ("node ID / node ordinal") instead of 「ノード数」 ("number of nodes") in two places:

  • functions-and-operators/group-by-modifier.md L47: the link text [Change node number] became 「ノード番号を変更する」 ("change the node ID").
  • tidb-cloud/releases/release-notes-2023.md L901: "You can decrease the node number via the TiDB Cloud console" became 「ノード番号をTiDB Cloudコンソール経由…で減らすこと」 ("decrease the node ID via the TiDB Cloud console").

Using "node count" or "number of nodes" in the English source removes the ambiguity for readers and for translation.

This PR replaces all 27 occurrences of "node number(s)" / "nodes number" in 10 files:

  • "node count" where the phrase is a compact noun, often parallel with "node size" or "vCPU and RAM": tidb-cloud/monitor-built-in-alerting.md (12), tidb-cloud/scalability-concepts.md (3), tidb-cloud/scale-tidb-cluster.md (5, including the heading), tidb-cloud/releases/notification-2023-11-14-scale-feature-maintenance.md, tidb-cloud/terraform-use-cluster-resource.md, tidb-cloud/tiproxy-management.md ("node counts").
  • "number of nodes" in running prose: tidb-cloud/backup-and-restore.md (2), tidb-cloud/releases/release-notes-2023.md, grafana-overview-dashboard.md ("The number of online nodes of each service").

Heading and anchor change: ## Change node number in tidb-cloud/scale-tidb-cluster.md becomes ## Change node count, so the anchor changes from #change-node-number to #change-node-count. The only two in-repo links to the old anchor (functions-and-operators/group-by-modifier.md and tidb-cloud/releases/release-notes-2023.md) are updated in this PR. After this change, no occurrences of "node number" or #change-node-number remain in the repository.

The same text exists on release-8.5 with the same occurrence counts, so the cherry-pick should apply cleanly. The Japanese docs will pick up the change through the regular translation sync.

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  • master (the latest development version)
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  • The changes in this PR were primarily made by an AI agent on behalf of the PR author.

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🤖 Generated with Claude Code

Summary by CodeRabbit

  • Documentation
    • Standardized wording across TiDB Cloud scaling, backup and restore, alerting, maintenance, and resource configuration guidance to use “node count” instead of “node number.”
    • Updated a TiFlash prerequisite link and a cluster-scaling reference link to point to the relevant “Change node count” guidance.
    • Clarified the Grafana “Services Up” description to refer to the number of online nodes for each service.

@ti-chi-bot ti-chi-bot added lgtm needs-1-more-lgtm Indicates a PR needs 1 more LGTM. size/M Denotes a PR that changes 30-99 lines, ignoring generated files. type/cherry-pick-for-release-8.5 This PR is cherry-picked to release-8.5 from a source PR. labels Oct 16, 2026
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coderabbitai Bot commented Oct 16, 2026 •

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📝 Walkthrough

The documentation updates standardize node-count wording across TiDB Cloud scaling content and revise two section links. The Grafana Services Up description is also rephrased without changing the metric.

Changes: TiDB Cloud documentation

Layer / File(s) Summary
Scaling concepts and sizing
tidb-cloud/scalability-concepts.md, tidb-cloud/scale-tidb-cluster.md, tidb-cloud/terraform-use-cluster-resource.md, tidb-cloud/tiproxy-management.md
Scaling concepts, restrictions, and sizing descriptions use “node count” terminology. The TiFlash configurable-resource list no longer includes storage.
Operational guidance and links
tidb-cloud/backup-and-restore.md, tidb-cloud/monitor-built-in-alerting.md, tidb-cloud/releases/notification-2023-11-14-scale-feature-maintenance.md, tidb-cloud/releases/release-notes-2023.md, functions-and-operators/group-by-modifier.md
Restore, alert, and maintenance guidance uses “node count” wording. Two links now target the “Change node count” section.

Grafana dashboard description

Layer / File(s) Summary
Services Up description
grafana-overview-dashboard.md
The description is rephrased as “The number of online nodes of each service.”

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to 28eef

This PR updates documentation terminology and section links without changing scaling, restore, alert, or metric behavior. No supported merge-blocking risk remains.

### Architecture Summary

Architecture risk: 🔵 Low · up to 28eef

The change affects 3 systems.

Changed systems: tidb-cloud, functions-and-operators, grafana-overview-dashboard.md

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

  • observed — tidb-cloud (service) was modified; 8 changed files map to changed impact.
  • observed — functions-and-operators (service) was modified; 1 changed file maps to changed impact.
  • observed — grafana-overview-dashboard.md (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

  • observed — Modified behavior in functions-and-operators/group-by-modifier.md: The TiDB Cloud prerequisite link now targets the “Change node count” section; it previously targeted “Change node number.”
  • observed — Modified behavior in grafana-overview-dashboard.md: Rephrases the Services Up description without changing the metric it describes.
  • observed — Modified behavior in tidb-cloud/backup-and-restore.md: The new-cluster restore instructions now say to increase the number of nodes instead of the node number.
  • observed — Modified behavior in tidb-cloud/backup-and-restore.md: The deleted-cluster restore instructions now say to increase the number of nodes instead of the node number.
Pre-merge checks: Passed 5
Check name Status Explanation
Title check Passed The title clearly and concisely describes the main documentation change: replacing “node number” with “node count” or “number of nodes.”
Description check Passed The description is complete. It explains the terminology change, affected files and anchors, applicable versions, AI involvement, and cherry-pick context.
Docstring Coverage Passed No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check Passed Check skipped because no linked issues were found for this pull request.
Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (10 skipped: 10 unsupported.)

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🔇 Additional comments: 7
grafana-overview-dashboard.md: 1

20-20: LGTM!

tidb-cloud/scalability-concepts.md: 1

30-30: LGTM!

Also applies to: 36-36, 42-42

tidb-cloud/scale-tidb-cluster.md: 2

15-15: LGTM!

Also applies to: 25-25, 35-35


29-29: 🎯 Functional Correctness

The heading change is already consistent with the in-repository links. No old #change-node-number references remain, and the two affected links use #change-node-count. The timed-out validation command does not establish a formatting or link failure, and the repository guidance lists Markdown validation as a habit rather than a required reported check.

tidb-cloud/terraform-use-cluster-resource.md: 1

268-268: LGTM!

tidb-cloud/tiproxy-management.md: 1

29-29: LGTM!

tidb-cloud/releases/notification-2023-11-14-scale-feature-maintenance.md-22-22: 1

22-22: 📐 Maintainability & Code Quality | 🟡 Minor | ⚡ Quick win

⚠️ Unverified finding
Verification ran but could not confirm this finding. It is shown for review, not as a verified issue.

Use “cannot” instead of “can not”.

The changed sentence uses can not without emphasis. Replace it with cannot.

Committable suggestion
-During the maintenance window, [change vCPU and RAM](https://docs.pingcap.com/tidbcloud/scale-tidb-cluster#change-vcpu-and-ram) is disabled and you can not change vCPU and RAM for your Dedicated Clusters. However, you can still change the node count or storage in the Modify Cluster page. Your TiDB cluster will maintain its regular operations for data read and write, ensuring no adverse effects on your online business.
+During the maintenance window, [change vCPU and RAM](https://docs.pingcap.com/tidbcloud/scale-tidb-cluster#change-vcpu-and-ram) is disabled and you cannot change vCPU and RAM for your Dedicated Clusters. However, you can still change the node count or storage in the Modify Cluster page. Your TiDB cluster will maintain its regular operations for data read and write, ensuring no adverse effects on your online business.

Sources: Path instructions, Linters/SAST tools


ℹ️ Review info
⚙️ Run configuration
  • Configuration used: Repository: pingcap/docs/.coderabbit.yaml
  • Review profile: ASSERTIVE
  • Plan: Advanced
  • Run ID: 1432b0a1-385d-49b8-9441-464992e2daa9
📥 Commits

Reviewing files that changed from the base of the PR and between e65d125 and 28eefdd.

📒 Files selected for processing: 10
  • functions-and-operators/group-by-modifier.md
  • grafana-overview-dashboard.md
  • tidb-cloud/backup-and-restore.md
  • tidb-cloud/monitor-built-in-alerting.md
  • tidb-cloud/releases/notification-2023-11-14-scale-feature-maintenance.md
  • tidb-cloud/releases/release-notes-2023.md
  • tidb-cloud/scalability-concepts.md
  • tidb-cloud/scale-tidb-cluster.md
  • tidb-cloud/terraform-use-cluster-resource.md
  • tidb-cloud/tiproxy-management.md

Included review availability: This review used your included allowance. Your plan provides up to 4 included reviews per hour; 2 remain after this review.

@qiancai

qiancai commented Oct 16, 2026

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/approve

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ti-chi-bot Bot commented Oct 16, 2026

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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 Oct 16, 2026
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ti-chi-bot Bot merged commit 5aa2014 into pingcap:release-8.5 Oct 16, 2026
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@ti-chi-bot
ti-chi-bot Bot deleted the cherry-pick-24360-to-release-8.5 branch October 16, 2026 10:26
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3 participants