0AyanamiRei opened a new pull request, #57197:
URL: https://github.com/apache/doris/pull/57197
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
During the load of a auto partition table, we will meet this case:
create partition rpc (need create partition :
"2025-10-21" )
sink1
-------------------------------------------------------------------------------------->
FE
create partition rpc (need create partition :
"2025-10-21" )
sink2
-------------------------------------------------------------------------------------->
FE
The FE's processing of these two RPCs is not atomic within a single import
transaction, so we need to ensure the idempotence of this RPC.
But, if the FE processes the RPC from sink1 first, creating partition
"2025-10-21", and then creates several tablets under it while selecting BEs for
them. Assuming tablet1's replica is assigned to [BE-1].
----> This time, a tablet migration occurs (for load balancing), causing
tablet1 move from [BE1] to [BE2]. When the FE processes the second RPC, it
returns the post-migration information, resulting in inconsistent tablet1
replica distribution information observed by the two RPC initiators.
This indicates that the createPartition RPC is not idempotent.
Fix this caseļ¼
When the first RPC creates a partition and selects BE1 as the replica for
tablet1, we record this information on a per-transaction basis. In the next
RPC, we can simply return the recorded information.
### 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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