HappenLee opened a new pull request, #61042:
URL: https://github.com/apache/doris/pull/61042
Use NVI (Non-Virtual Interface) pattern for Scanner::open(), similar to
Scanner::get_block() / _get_block_impl(). Add SCOPED_RAW_TIMER in the base
class open() method to include scanner initialization time (ReaderInitTime,
BlockReaderBuildHeapInitTimer, etc.) in PerScannerRunningTime profile counter.
This fixes the issue where PerScannerRunningTime showed only microseconds
while ReaderInitTime showed several seconds, making the profile misleading.
Changes:
- scanner.h: Change open() to non-virtual NVI, add _open_impl() virtual
- 5 subclasses: Rename open() to _open_impl() and call base::_open_impl()
(OlapScanner, FileScanner, MetaScanner, JdbcScanner, EsScanner)
### 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
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