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Posted to commits@doris.apache.org by "TangSiyang2001 (via GitHub)" <gi...@apache.org> on 2025/10/23 08:06:19 UTC
[PR] [opt](rowset) Remote fetch rowsets to avoid -230 error when capturing rowsets (#52995) [doris]
TangSiyang2001 opened a new pull request, #57271:
URL: https://github.com/apache/doris/pull/57271
Related PR: #52440
In read-write splitting scenarios, some BE (Backend) nodes may have already merged certain rowset versions, while another BE still attempts to capture or access those rowsets.
When this happens, the BE reports error E-230 (versions already merged), causing data access or synchronization to fail.
This PR introduces a remote rowset fetching mechanism, allowing a BE that lacks the required rowset to fetch it from other BE nodes, instead of failing with E-230.
- Added a remote fetch mechanism in the rowset management layer: When a BE detects that a rowset is missing locally but has already been merged, it will try to fetch the rowset from other BE nodes.
- Updated version and state checking logic to correctly identify the “merged but missing” condition.
- Adjusted the rowset access path to trigger remote fetch rather than throwing an immediate error.
- Added tests (unit/integration) to cover the new logic where applicable.
- Ensured backward compatibility: If the BE already has the rowset locally or read-write splitting is not enabled, the behavior remains unchanged.
Introduce a remote rowset fetching mechanism to prevent E-230 (“versions already merged”) errors in read-write splitting scenarios. This improves BE fault tolerance when some nodes have merged versions that others have not yet synchronized.
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
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- [ ] 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)
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Re: [PR] [opt](rowset) Remote fetch rowsets to avoid -230 error when capturing rowsets (#52995) [doris]
Posted by "TangSiyang2001 (via GitHub)" <gi...@apache.org>.
TangSiyang2001 commented on PR #57271:
URL: https://github.com/apache/doris/pull/57271#issuecomment-3435647720
run buildall
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Re: [PR] [opt](rowset) Remote fetch rowsets to avoid -230 error when capturing rowsets (#52995) [doris]
Posted by "hello-stephen (via GitHub)" <gi...@apache.org>.
hello-stephen commented on PR #57271:
URL: https://github.com/apache/doris/pull/57271#issuecomment-3435647773
Thank you for your contribution to Apache Doris.
Don't know what should be done next? See [How to process your PR](https://cwiki.apache.org/confluence/display/DORIS/How+to+process+your+PR).
Please clearly describe your PR:
1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
3. What features were added. Why was this function added?
4. Which code was refactored and why was this part of the code refactored?
5. Which functions were optimized and what is the difference before and after the optimization?
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Re: [PR] [opt](rowset) Remote fetch rowsets to avoid -230 error when capturing rowsets (#52995) [doris]
Posted by "yiguolei (via GitHub)" <gi...@apache.org>.
yiguolei merged PR #57271:
URL: https://github.com/apache/doris/pull/57271
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