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planner: prealloc the slices in the SplitCorColAccessCondFromFilters #58785

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merged 3 commits into from
Jan 8, 2025

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@hawkingrei hawkingrei commented Jan 8, 2025

What problem does this PR solve?

Issue Number: close #58784

Problem Summary:

What changed and how does it work?

As the flame graph shows, this runtime.growslice should be avoided.

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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 do-not-merge/needs-tests-checked release-note-none Denotes a PR that doesn't merit a release note. size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. sig/planner SIG: Planner and removed do-not-merge/needs-tests-checked labels Jan 8, 2025
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/retest

Signed-off-by: Weizhen Wang <[email protected]>
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codecov bot commented Jan 8, 2025

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.5838%. Comparing base (b2f2faa) to head (19a9c94).
Report is 5 commits behind head on master.

Additional details and impacted files
@@               Coverage Diff                @@
##             master     #58785        +/-   ##
================================================
+ Coverage   73.1262%   73.5838%   +0.4575%     
================================================
  Files          1676       1676                
  Lines        463646     465207      +1561     
================================================
+ Hits         339047     342317      +3270     
+ Misses       103756     102047      -1709     
  Partials      20843      20843                
Flag Coverage Δ
integration 42.8293% <100.0000%> (?)
unit 72.2859% <100.0000%> (-0.0339%) ⬇️

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

Components Coverage Δ
dumpling 52.6910% <ø> (ø)
parser ∅ <ø> (∅)
br 45.7030% <ø> (-0.0210%) ⬇️

@ti-chi-bot ti-chi-bot bot added the needs-1-more-lgtm Indicates a PR needs 1 more LGTM. label Jan 8, 2025
Signed-off-by: Weizhen Wang <[email protected]>
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ti-chi-bot bot commented Jan 8, 2025

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AilinKid, lance6716

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@ti-chi-bot ti-chi-bot bot added approved lgtm and removed needs-1-more-lgtm Indicates a PR needs 1 more LGTM. labels Jan 8, 2025
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ti-chi-bot bot commented Jan 8, 2025

[LGTM Timeline notifier]

Timeline:

  • 2025-01-08 05:37:05.182087922 +0000 UTC m=+331968.470919624: ☑️ agreed by lance6716.
  • 2025-01-08 07:26:42.387712142 +0000 UTC m=+338545.676543847: ☑️ agreed by AilinKid.

@ti-chi-bot ti-chi-bot bot merged commit 7479804 into pingcap:master Jan 8, 2025
24 checks passed
@hawkingrei hawkingrei deleted the avoid_grow_slices branch January 8, 2025 07:31
breezewish added a commit that referenced this pull request Jan 8, 2025
…long-vector

* commit '510d0037b18f258f505abc6cf13a8128563e9359':
  *: upgrade pd client to make sure tso client initiate successfully (#58752)
  ttl, test: scale TTL workers during the fault tests (#58750)
  planner: improve warning messages for unsupported HASH_JOIN hints (#58646)
  planner: prealloc the slices in the SplitCorColAccessCondFromFilters (#58785)
  ddl: supports non-unique global index (#58678)
  util/stmtsummary: add the network traffic related fields (#58101)
  var: enable `pd_enable_follower_handle_region` as default (#58385)
  statistics: refactor stats meta handling to use DeltaUpdate for multi-table support (#58657)
  parser: move 'model' to 'ast' pkg (#58704)
  statistics: add recover to protect background task (#58739)
  disttask: cancel subtask context if scheduled away (#58615)
  *: don't handle live updates of column size (#58596)
  *: fix a bug for default_authentication_plugin (2) (#58723)
  dupdetect: gRPC cancel should trigger retry (#58542)
  *: fix a bug for default_authentication_plugin (#57391)
  distsql: Fix backoff execution info inaccurate issue (#58707)
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avoid runtime.growslice in the SplitCorColAccessCondFromFilters
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