RoanHeNaN opened a new pull request, #68941:
URL: https://github.com/apache/doris/pull/68941

   ### What problem does this PR solve?
   
   Issue Number: None
   
   Related PR: None
   
   Problem Summary: ANN indexes were built for every direct-load segment, 
adding index construction to import latency. Add the table property 
skip_ann_index_on_load. When enabled, direct loads and their in-rowset segment 
compaction omit ANN index construction. Rewriting background compaction builds 
the indexes, and ordered rowset linking is disabled so that the build cannot be 
bypassed. The existing inverted-index skip property remains disabled.
   
   ### Release note
   
   Add the skip_ann_index_on_load table property to defer ANN index 
construction until compaction.
   
   ### Check List (For Author)
   
   - Test: BE header hygiene, clang-format check, and git diff --check passed. 
FE unit test was attempted but generated-source setup was blocked by missing 
thirdparty tools. BE unit and regression tests were not run because thirdparty 
libraries are still being built.
   - Behavior changed: Yes (tables with skip_ann_index_on_load=true defer ANN 
index construction until compaction)
   - Does this need documentation: No
   
   ### What problem does this PR solve?
   
   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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