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@winoros winoros commented Feb 3, 2026

What problem does this PR solve?

Issue Number: close #61239

Problem Summary:

What changed and how does it work?

In pingcap/tipb#361 and tiflash, we redesigned the mpp execution flow in MPP. The new framework solved the possible deadlock problem caused by the ExchangeSender/Receiver.

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No need to test
    • I checked and no code files have been changed.

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

Please refer to Release Notes Language Style Guide to write a quality release note.

None

@ti-chi-bot ti-chi-bot bot added the release-note-none Denotes a PR that doesn't merit a release note. label Feb 3, 2026
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ti-chi-bot bot commented Feb 3, 2026

[APPROVALNOTIFIER] This PR is NOT APPROVED

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@ti-chi-bot ti-chi-bot bot added size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. sig/planner SIG: Planner labels Feb 3, 2026
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tiprow bot commented Feb 3, 2026

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

Test name Commit Details Required Rerun command
tidb_parser_test d7e0634 link true /test tidb_parser_test
fast_test_tiprow d7e0634 link true /test fast_test_tiprow

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codecov bot commented Feb 3, 2026

Codecov Report

❌ Patch coverage is 17.99163% with 196 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.9617%. Comparing base (5ee2924) to head (d7e0634).
⚠️ Report is 56 commits behind head on master.

Additional details and impacted files
@@               Coverage Diff                @@
##             master     #66007        +/-   ##
================================================
- Coverage   77.7951%   76.9617%   -0.8335%     
================================================
  Files          2000       1923        -77     
  Lines        545047     539910      -5137     
================================================
- Hits         424020     415524      -8496     
- Misses       119364     124348      +4984     
+ Partials       1663         38      -1625     
Flag Coverage Δ
integration 41.4574% <0.0000%> (-6.7129%) ⬇️
unit 76.0525% <17.9916%> (-0.3686%) ⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components Coverage Δ
dumpling 56.7974% <ø> (+0.0929%) ⬆️
parser ∅ <ø> (∅)
br 48.3069% <ø> (-12.6788%) ⬇️
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ti-chi-bot bot commented Feb 3, 2026

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

Test name Commit Details Required Rerun command
idc-jenkins-ci-tidb/build d7e0634 link true /test build
pull-build-next-gen d7e0634 link true /test pull-build-next-gen
idc-jenkins-ci-tidb/unit-test d7e0634 link true /test unit-test

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release-note-none Denotes a PR that doesn't merit a release note. sig/planner SIG: Planner size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files.

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Support new cte operator in tiflash side

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