jacktengg opened a new pull request, #68399:
URL: https://github.com/apache/doris/pull/68399
### What problem does this PR solve?
Issue Number: N/A
Related PR: N/A
Problem Summary: MemTable tracks its shared_ptr element array through
DorisVector, but ordinary make_shared allocations for each RowInBlock and its
control block bypass Doris memory accounting. This underestimates
memory_usage() during writes and the additional row references created for MOW
Cluster Key sorting, affecting flush thresholds and memory limits. Use
allocate_shared with CustomStdAllocator on both paths and track the Tie byte
buffer with DorisVector. Shared ownership and row/LSN ordering remain
unchanged, and deallocation balances accounting in the existing MemTable
tracker scopes, including aggregation and asynchronous cleanup.
### Release note
Correct MemTable memory accounting for row objects, shared_ptr control
blocks and sorting tie buffers so flush thresholds and memory limits include
these allocations.
### Check List (For Author)
- Test: Unit Test
- ./run-be-ut.sh --run --filter='*MemTable*' -j 24: all 17 tests pass
under ASAN, including 7 new memory tracking cases.
- ./build.sh --be -j 24: ASAN BE build.
- clang-format 16, check-format.sh, check-build-hygiene.sh and git diff
--check pass.
- clang-tidy attempted; no diagnostics on changed lines. Its nonzero
exit is blocked by the pre-existing unmatched NOLINTEND in
be/src/core/types.h:576.
- Behavior changed: Yes, MemTable memory statistics now include the row
objects, control blocks and tie buffers used by flush and memory limits.
- 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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