Online DDL: `--singleton-table` DDL strategy flag

shlomi-noach commented 1 week ago

Description

Per https://github.com/vitessio/vitess/issues/17162, we add a --singleton-table DDL strategy flag, which prevents an Online DDL submission for a table (or view) that is already pending an Online DDL operation.

Related Issue(s)

Fixes https://github.com/vitessio/vitess/issues/17162

Documentation: https://github.com/vitessio/website/pull/1881

Checklist

[ ] "Backport to:" labels have been added if this change should be back-ported to release branches
[ ] If this change is to be back-ported to previous releases, a justification is included in the PR description
[ ] Tests were added or are not required
[ ] Did the new or modified tests pass consistently locally and on CI?
[ ] Documentation was added or is not required

Deployment Notes

vitess-bot[bot] commented 1 week ago

Review Checklist

Hello reviewers! :wave: Please follow this checklist when reviewing this Pull Request.

General

[ ] Ensure that the Pull Request has a descriptive title.
[ ] Ensure there is a link to an issue (except for internal cleanup and flaky test fixes), new features should have an RFC that documents use cases and test cases.

Tests

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Backward compatibility

[ ] Protobuf changes should be wire-compatible.
[ ] Changes to _vt tables and RPCs need to be backward compatible.
[ ] RPC changes should be compatible with vitess-operator
[ ] If a flag is removed, then it should also be removed from vitess-operator and arewefastyet, if used there.
[ ] vtctl command output order should be stable and awk-able.

codecov[bot] commented 1 week ago

Codecov Report

Attention: Patch coverage is 25.00000% with 9 lines in your changes missing coverage. Please review.

Project coverage is 67.44%. Comparing base (e87457e) to head (fc64ff9). Report is 23 commits behind head on main.

Files with missing lines	Patch %	Lines
go/vt/vttablet/onlineddl/executor.go	0.00%	9 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #17169 +/- ## ======================================= Coverage 67.44% 67.44% ======================================= Files 1569 1569 Lines 252178 252189 +11 ======================================= + Hits 170080 170088 +8 - Misses 82098 82101 +3 ```

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vitessio / vitess