[feature](coordinator) Add backend selection extension framework (#65173) - #67214
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deardeng wants to merge 3 commits into
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[feature](coordinator) Add backend selection extension framework (#65173)#67214deardeng wants to merge 3 commits into
deardeng wants to merge 3 commits into
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…che#65173) pick from apache#65173 This PR introduces a public backend selection extension framework for query, load, and replica-repair scheduling paths. The public interfaces are aligned with the downstream implementation so that downstream extensions can be maintained without carrying kernel API differences. Apache Doris does not provide or register an affinity BackendSelectionProvider. The default community provider is strictly no-op, preserving existing query scheduling, load candidate ordering, placement, and replica-repair source selection behavior. This PR does not introduce resource-group affinity implementation, enterprise provider, enterprise configuration, or other enterprise-only behavior.
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FE UT Coverage ReportIncrement line coverage |
### What problem does this PR solve? Restore the FE unit and regression coverage from apache#65173 that was omitted from the branch-4.1 backport. The tests also exposed two master prerequisites missing on this branch: bounded group-commit selection caches and no journal wait for the update-load-data shortcut. ### Release note None ### Check List (For Author) - Test - [x] Unit Test - [ ] Regression test - Behavior changed: - [x] Yes. - [ ] No. - Does this need documentation? - [x] No.
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pick from #65173
This PR introduces a public backend selection extension framework for query, load, and replica-repair scheduling paths. The public interfaces are aligned with the downstream implementation so that downstream extensions can be maintained without carrying kernel API differences. Apache Doris does not provide or register an affinity BackendSelectionProvider. The default community provider is strictly no-op, preserving existing query scheduling, load candidate ordering, placement, and replica-repair source selection behavior. This PR does not introduce resource-group affinity implementation, enterprise provider, enterprise configuration, or other enterprise-only behavior.
What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
Release note
None
Check List (For Author)
Test
Behavior changed:
Does this need documentation?
Check List (For Reviewer who merge this PR)