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branch-4.2 [refactor](nereids) Remove defer materialize - #68208

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@englefly

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Cherry-pick of #62917 to branch-4.2

refactorRemove defer materialize

defer materialization is replaced by topn-lazy-materialization.
Unit tests: EliminateOrderByKeyTest (37) and OlapTableTest (11) pass; regression suites query_p0/sort and query_p0/topn_lazy/lazy_materialize_view pass.

### What problem does this PR solve?

defer materialization is replaced by topn-lazy-materialization
@englefly
englefly requested a review from yiguolei as a code owner September 18, 2026 15:45
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run buildall

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Thank you for your contribution to Apache Doris.
Don't know what should be done next? See 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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Cloud UT Coverage Report

Increment line coverage 🎉

Increment coverage report
Complete coverage report

Category Coverage
Function Coverage 73.27% (1826/2492)
Line Coverage 61.07% (32858/53800)
Region Coverage 48.79% (31195/63943)
Branch Coverage 51.66% (9670/18720)

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FE UT Coverage Report

Increment line coverage 80.00% (8/10) 🎉
Increment coverage report
Complete coverage report

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FE Regression Coverage Report

Increment line coverage 80.00% (8/10) 🎉
Increment coverage report
Complete coverage report

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BE Regression && UT Coverage Report

Increment line coverage 100% (0/0) 🎉

Increment coverage report
Complete coverage report

Category Coverage
Function Coverage 74.34% (31423/42272)
Line Coverage 58.62% (350406/597711)
Region Coverage 55.40% (292737/528366)
Branch Coverage 56.21% (131979/234807)

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2 participants