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planner: handle the expected row count for pushed-down selection in mpp #36195

Merged
merged 4 commits into from
Jul 13, 2022
Merged

planner: handle the expected row count for pushed-down selection in mpp #36195

merged 4 commits into from
Jul 13, 2022

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time-and-fate
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What problem does this PR solve?

Issue Number: close #36194

Problem Summary:

We didn't handle the expected row count for pushed-down selection in mpp task.

What is changed and how it works?

Handle the row count for pushed-down selection for mpp task the same as other tasks:

tidb/planner/core/find_best_task.go

Line 1945 in bc1b152

ts.addPushedDownSelection(copTask, ds.stats.ScaleByExpectCnt(prop.ExpectedCnt))

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

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

None

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ti-chi-bot commented Jul 13, 2022 •
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[REVIEW NOTIFICATION]

This pull request has been approved by:

  • winoros
  • xuyifangreeneyes

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@ti-chi-bot ti-chi-bot added 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. labels Jul 13, 2022
@ti-chi-bot ti-chi-bot added size/M Denotes a PR that changes 30-99 lines, ignoring generated files. and removed size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Jul 13, 2022
@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Jul 13, 2022
@ti-chi-bot ti-chi-bot added status/LGT2 Indicates that a PR has LGTM 2. and removed status/LGT1 Indicates that a PR has LGTM 1. labels Jul 13, 2022
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/merge

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This pull request has been accepted and is ready to merge.

Commit hash: ee63c3d

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Jul 13, 2022
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sre-bot commented Jul 13, 2022 •
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Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/7eaee1a34ad8c07b5f2a9fc006fa89915ca068bb

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@time-and-fate: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

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/run-all-tests

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/run-all-tests

@ti-chi-bot ti-chi-bot merged commit 24eb419 into pingcap:master Jul 13, 2022
joycse06 added a commit to joycse06/tidb that referenced this pull request Jul 13, 2022
@joycse06
Merge branch 'master' into add-sql-require-primary-key
0e25f45 
* master: (27 commits)
  executor: parallel cancel mpp query (pingcap#36161)
  store/copr: adjust the cop cache admission process time for paging (pingcap#36157)
  log-backup: get can restored global-checkpoint-ts when support v3 checkpoint advance (pingcap#36197)
  executor: optimize cursor read point get by reading through pessimistic lock cache (pingcap#36149)
  *: add tidb_min_paging_size system variable (pingcap#36107)
  planner: handle the expected row count for pushed-down selection in mpp (pingcap#36195)
  *: support show ddl jobs for sub-jobs (pingcap#36168)
  table-filter: optimize table pattern message and unit tests (pingcap#36160)
  domain: fix unstable test TestAbnormalSessionPool (pingcap#36154)
  executor: check the error returned by `handleNoDelay` (pingcap#36105)
  log-backup: fix checkpoint display (pingcap#36166)
  store/mockstore/unistore: fix several issues of coprocessor paging in unistore (pingcap#36147)
  test: refactor restart test (pingcap#36174)
  ddl: support rename index and columns for multi-schema change (pingcap#36148)
  test: remove meaningless test and update bazel (pingcap#36136)
  planner: Reduce verbosity of logging unknown system variables (pingcap#36013)
  metrics/grafana: bring back the plan cache miss panel (pingcap#36081)
  ddl: implement table granularity DDL for SchemaTracker (pingcap#36077)
  *: bazel use jdk 17 (pingcap#36070)
  telemetry: add reviewer rule (pingcap#36084)
  ...
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@xuyifangreeneyes xuyifangreeneyes xuyifangreeneyes approved these changes

@winoros winoros winoros approved these changes

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Successfully merging this pull request may close these issues.

The row count of selection in Limit->Selection->TableFullScan(mpp) is incorrect
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@time-and-fate @ti-chi-bot @sre-bot @winoros @xuyifangreeneyes