Gabriel39 opened a new pull request, #64033:
URL: https://github.com/apache/doris/pull/64033
### What problem does this PR solve?
Issue Number: close #25905
Related PR: None
Problem Summary: FileScanner kept passing raw IOContext pointers to several
file readers, so DelegateReader could still create a shallow-copied IOContext
on the hot scan path. That left different IOContext instances inside the same
reader stack and could also dereference missing child stats pointers when an
IOContext existed without file reader stats. This change keeps FileScanner's
IOContext in a shared holder, passes it through CSV, text, JSON, native,
Parquet, ORC, and table-format reader variants, and makes Native/Parquet/ORC
use the shared DelegateReader API when a holder is available. Tracing/stat
updates now check the nested stats pointer before use.
### Release note
None
### Check List (For Author)
- Test: Manual test
- Ran build-support/clang-format.sh
- Ran git diff --cached --check
- Tried ./build.sh --be, but local JAVA_HOME points to JDK 11 and the
build script requires JDK 17
- Behavior changed: No
- 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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