columnar: update pprof to fix incomplete cpu profile

[yongman]

What problem does this PR solve?

Issue Number: close #10881

Problem Summary:
cpu profile can not show stack in rust.

What is changed and how it works?

Update pprof to make cpu profile works properly.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

None

Summary by CodeRabbit

• Chores
  • Updated internal profiling tooling and its configuration to improve performance diagnostics and support additional profiling capabilities.

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[ti-chi-bot]

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 6b9b41ab-b27d-41be-a9a0-5f8ab0927bb5

📥 Commits

Reviewing files that changed from the base of the PR and between e41c975 and 7bcc9fa.

⛔ Files ignored due to path filters (1)

• contrib/tiflash-columnar-hub/Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (2)

• contrib/tiflash-columnar-hub/Cargo.toml
• contrib/tiflash-columnar-hub/hub-runtime/Cargo.toml

✅ Files skipped from review due to trivial changes (1)

• contrib/tiflash-columnar-hub/hub-runtime/Cargo.toml

🚧 Files skipped from review as they are similar to previous changes (1)

• contrib/tiflash-columnar-hub/Cargo.toml

---

📝 Walkthrough

Walkthrough

This PR updates pprof usage: the root Cargo.toml patches pprof to a tikv fork at a specific revision, and hub-runtime changes pprof features from frame-pointer to cpp, framehop-unwinder, and protobuf-codec while keeping flamegraph.

Changes

Pprof Profiling Configuration

Layer / File(s)	Summary
Pprof patch and feature configuration contrib/tiflash-columnar-hub/Cargo.toml, contrib/tiflash-columnar-hub/hub-runtime/Cargo.toml	Root Cargo.toml adds a [patch.crates-io] override for pprof pointing to a tikv fork at a pinned revision. hub-runtime adjusts pprof features: removes frame-pointer, adds cpp, framehop-unwinder, and protobuf-codec, retains flamegraph, and keeps default-features = false.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Suggested labels

lgtm

Suggested reviewers

• CalvinNeo
• JinheLin

Poem

🐰
A tiny patch, a fork we steer,
Framehops leap and cpp draws near,
Profiles climb where shadows hid,
Flamegraphs spark from every bid,
Rabbity cheers for clearer skit.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: updating pprof to fix incomplete CPU profiling in the columnar component.
Description check	✅ Passed	The description follows the template structure with issue reference, problem summary, changes explanation, and test selection. Manual test was marked as performed and evidence provided.
Linked Issues check	✅ Passed	The PR addresses issue #10881 by updating pprof configuration/version to fix CPU profiling stack capture in Rust, which directly resolves the stated problem of incomplete profiles.
Out of Scope Changes check	✅ Passed	All changes are scoped to pprof dependency configuration and feature updates in Cargo.toml files, directly addressing the CPU profiling fix objective with no extraneous modifications.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[ti-chi-bot]

@yongman: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-sanitizer-tsan	7bcc9fa	link	false	/test pull-sanitizer-tsan

Full PR test history. Your PR dashboard.

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