HappenLee opened a new pull request, #64441:
URL: https://github.com/apache/doris/pull/64441
### What problem does this PR solve?
TopN lazy materialization relies on BE adding `GLOBAL_ROWID_COL` to the
tablet schema through `columns_desc`. When `light_schema_change=false`, table
columns have `col_unique_id=-1`, which causes BE to skip rebuilding the schema
from `columns_desc`. As a result, `GLOBAL_ROWID_COL` is not added and the scan
can fail with `field name is invalid`.
This PR skips TopN lazy materialization for Olap tables with
`light_schema_change=false`, so FE keeps the regular scan output and avoids
generating a plan that requires the missing row id column.
It also adds FE unit test coverage for:
- skipping TopN lazy materialization when `light_schema_change=false`
- preserving nested column access paths in TopN lazy materialization
Issue Number: close #xxx
Related PR: #xxx
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [x] 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? -->
`sh run-fe-ut.sh --run
org.apache.doris.nereids.postprocess.TopnLazyMaterializeTest`
- Behavior changed:
- [x] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [x] 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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