wyxxxcat opened a new pull request, #54849:
URL: https://github.com/apache/doris/pull/54849
### What problem does this PR solve?
retry when txn conflict, 10 max retry times
before
```
W20250815 11:37:43.104856 448779 recycler.cpp:3925] failed to delete expired
txn, err=Conflict
key=011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f5a71323835444d37643600011074786e00011200000000000003e81200000000000007d4
W20250815 11:37:43.104873 448783 recycler.cpp:3925] failed to delete expired
txn, err=Conflict
key=011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f5a71323835444d37643600011074786e00011200000000000003e81200000000000007d8
W20250815 11:37:43.104945 448784 mem_txn_kv.cpp:200] commit conflict
I20250815 11:37:43.104902 448777 recycler.cpp:3932] recycle expired txn,
key=011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f5a71323835444d37643600011074786e00011200000000000003e81200000000000007d1
W20250815 11:37:43.104959 448782 recycler.cpp:3925] failed to delete expired
txn, err=Conflict
key=011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f5a71323835444d37643600011074786e00011200000000000003e81200000000000007d7
W20250815 11:37:43.104981 448779 recycler.cpp:3945] failed to delete recycle
txn kv instance id="concurrent_recycle_txn_label_test_Zq285DM7d6"
key="011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f5a71323835444d37643600011074786e00011200000000000003e81200000000000007d4"
W20250815 11:37:43.104983 448783 recycler.cpp:3945] failed to delete recycle
txn kv instance id="concurrent_recycle_txn_label_test_Zq285DM7d6"
key="011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f5a71323835444d37643600011074786e00011200000000000003e81200000000000007d8"
```
now
```
W20250815 11:56:22.749135 595891 recycler.cpp:3925] txn conflict, retry
times=6
key=011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f3353706c496c4742534c00011074786e00011200000000000003e81200000000000007d7
db_id=1000 txn_id=2007
I20250815 11:56:22.896646 595892 recycler.cpp:3942] recycle expired txn,
key=011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f3353706c496c4742534c00011074786e00011200000000000003e81200000000000007d8
W20250815 11:56:22.942795 595891 mem_txn_kv.cpp:200] commit conflict
W20250815 11:56:22.942880 595891 recycler.cpp:3925] txn conflict, retry
times=7
key=011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f3353706c496c4742534c00011074786e00011200000000000003e81200000000000007d7
db_id=1000 txn_id=2007
I20250815 11:56:23.079614 595891 recycler.cpp:3942] recycle expired txn,
key=011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f3353706c496c4742534c00011074786e00011200000000000003e81200000000000007d7
I20250815 11:56:23.079846 595741 recycler.cpp:3578] finish scan_and_recycle
key_range=[011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f3353706c496c4742534c00011074786e0001120000000000000000120000000000000000,011072656379636c65000110636f6e63757272656e745f72656379636c655f74786e5f6c6162656c5f746573745f3353706c496c4742534c00011074786e0001127fffffffffffffff127fffffffffffffff)
num_scanned=10 get_range_retried=0 ret=0 err=
I20250815 11:56:23.080000 595741 recycler.h:384] recycle instance:
concurrent_recycle_txn_label_test_3SplIlGBSL, operation type:
recycle_expired_txn_label, cost: 1385 ms, total recycled num: 10, total
recycled data size: 0 bytes
```
### 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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