wyxxxcat opened a new pull request, #65746:
URL: https://github.com/apache/doris/pull/65746
### What problem does this PR solve?
The recycler previously submitted every expired transaction to the concurrent
delete executor independently. Transactions belonging to the same database
and
label update the same transaction label key during recycling. Recycling
these
transactions concurrently could therefore cause transaction conflicts,
unnecessary retries, and recycling failures after the retry limit was
reached.
Group expired transactions by their transaction label key. Transactions
within
the same label group are now recycled sequentially, while different label
groups are still processed concurrently. This prevents conflicts caused by
the
recycler itself without reducing concurrency across independent labels.
Update the recycler unit tests to verify that transactions within the same
label group no longer produce internal transaction conflicts and that
recycle
errors are still propagated correctly.
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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