Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

ddl: wait schema change before rename table job is done (#43341) #43457

Open
wants to merge 2 commits into
base: release-5.4
Choose a base branch
from

Conversation

ti-chi-bot
Copy link
Member

This is an automated cherry-pick of #43341

What problem does this PR solve?

Issue Number: close #43338

Problem Summary:

What is changed and how it works?

We split the renaming table job into two steps:

  1. rename table and update the schema version.
  2. update the job state to JobStateDone.

This is the requirement from TiCDC because

  • it uses the job state to check whether the DDL is finished.
  • there is a gap between schema reloading and job state updating:
    when the job state is updated to JobStateDone, before the new schema reloaded,
    there may be DMLs that use the old schema.
  • TiCDC cannot handle the DMLs that use the old schema, because
    the commit TS of the DMLs are greater than the job state updating TS.

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

@ti-chi-bot ti-chi-bot added release-note-none Denotes a PR that doesn't merit a release note. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. type/cherry-pick-for-release-5.4 This PR is cherry-picked to release-5.4 from a source PR. labels Apr 27, 2023
@ti-chi-bot
Copy link

ti-chi-bot bot commented Apr 27, 2023

[REVIEW NOTIFICATION]

This pull request has not been approved.

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

The full list of commands accepted by this bot can be found here.

Reviewer can indicate their review by submitting an approval review.
Reviewer can cancel approval by submitting a request changes review.

@ti-chi-bot ti-chi-bot bot added do-not-merge/cherry-pick-not-approved size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. and removed size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Apr 27, 2023
@tangenta tangenta force-pushed the cherry-pick-43341-to-release-5.4 branch from 4cac40e to 12bd33f Compare May 5, 2023 07:04
@ti-chi-bot ti-chi-bot bot added size/L Denotes a PR that changes 100-499 lines, ignoring generated files. and removed size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. labels May 5, 2023
@ti-chi-bot ti-chi-bot added the cherry-pick-approved Cherry pick PR approved by release team. label Jun 14, 2023
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
cherry-pick-approved Cherry pick PR approved by release team. release-note-none Denotes a PR that doesn't merit a release note. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. type/cherry-pick-for-release-5.4 This PR is cherry-picked to release-5.4 from a source PR.
Projects
None yet
Development

Successfully merging this pull request may close these issues.

2 participants