Gabriel39 opened a new pull request, #67570:
URL: https://github.com/apache/doris/pull/67570
### What problem does this PR solve?
Issue Number: None
Related PR: None
Problem Summary:
Multi-column Iceberg equality deletes keep a node-based hash-to-row map for
every delete row. FileScannerV2 also rebuilds that map for every data split
even though the parsed delete file is shared. This amplifies memory usage and
repeats index construction.
This change stores hash candidates in a sorted contiguous index and shares
the immutable index through the split cache. Full-key comparison remains in
place to resolve hash collisions.
### Release note
None
### Check List (For Author)
- Test
- [ ] Regression test
- [x] Unit Test
- [x] Manual test (add detailed scripts or steps below)
- Full BE build
- [ ] 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
- Behavior changed:
- [x] No.
- [ ] Yes.
- Does this need documentation?
- [x] No.
- [ ] Yes.
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label
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