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statistics: remove 1min no write check for unanalyzed table in auto analyze #39395

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merged 2 commits into from
Nov 25, 2022

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@xuyifangreeneyes xuyifangreeneyes commented Nov 25, 2022

What problem does this PR solve?

Issue Number: close #43355

Problem Summary:

What is changed and how it works?

Same as #39179

When we decide whether a table needs to be auto analzyzed, if the table has never been analyzed and there is no write to the table in the last minute, we trigger auto analyze for the table. The condition of no write in the last minute may prevent the table from auto analyze and the optimizer may choose wrong plans using pseudo stats. Hence the pr removes the condition. The condition of no write in the last minute was first introduced for the following case. When loading data, auto analyze v1 is triggered and preempts CPU and other resources with loading data. However, after auto analyze v2 is introduced, the resource consumption of analyze is reduced so it would not be a problem to trigger auto analyze when loading data.

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.

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ti-chi-bot commented Nov 25, 2022

[REVIEW NOTIFICATION]

This pull request has been approved by:

  • Reminiscent
  • chrysan

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
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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 Nov 25, 2022
@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Nov 25, 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 Nov 25, 2022
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/merge

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

Commit hash: 2baec67

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Nov 25, 2022
@ti-chi-bot ti-chi-bot merged commit ddfa6db into pingcap:master Nov 25, 2022
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sre-bot commented Nov 25, 2022

TiDB MergeCI notify

🔴 Bad News! New failing [1] after this pr merged.
These new failed integration tests seem to be caused by the current PR, please try to fix these new failed integration tests, thanks!

CI Name Result Duration Compare with Parent commit
idc-jenkins-ci-tidb/sqllogic-test-2 🟥 failed 1, success 27, total 28 6 min 25 sec New failing
idc-jenkins-ci-tidb/common-test 🔴 failed 1, success 10, total 11 15 min Existing failure
idc-jenkins-ci-tidb/mybatis-test 🔴 failed 1, success 0, total 1 11 min Existing failure
idc-jenkins-ci/integration-cdc-test 🟢 all 39 tests passed 21 min Existing passed
idc-jenkins-ci-tidb/integration-common-test 🟢 all 17 tests passed 17 min Existing passed
idc-jenkins-ci-tidb/tics-test 🟢 all 1 tests passed 6 min 6 sec Existing passed
idc-jenkins-ci-tidb/sqllogic-test-1 🟢 all 26 tests passed 5 min 49 sec Existing passed
idc-jenkins-ci-tidb/integration-ddl-test 🟢 all 6 tests passed 4 min 49 sec Existing passed
idc-jenkins-ci-tidb/integration-compatibility-test 🟢 all 1 tests passed 3 min 14 sec Existing passed
idc-jenkins-ci-tidb/plugin-test 🟢 build success, plugin test success 4min Existing passed

@chrysan chrysan added needs-cherry-pick-release-5.4 Should cherry pick this PR to release-5.4 branch. needs-cherry-pick-release-6.1 Should cherry pick this PR to release-6.1 branch. labels Feb 9, 2023
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In response to a cherrypick label: new pull request created to branch release-5.4: #41228.

ti-chi-bot pushed a commit to ti-chi-bot/tidb that referenced this pull request Feb 9, 2023
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In response to a cherrypick label: new pull request created to branch release-6.1: #41229.

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needs-cherry-pick-release-5.4 Should cherry pick this PR to release-5.4 branch. needs-cherry-pick-release-6.1 Should cherry pick this PR to release-6.1 branch. 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. status/can-merge Indicates a PR has been approved by a committer. status/LGT2 Indicates that a PR has LGTM 2.
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5 participants