zclllyybb opened a new pull request, #66305:
URL: https://github.com/apache/doris/pull/66305
### What problem does this PR solve?
Issue Number: None
Related PR: #50769
Problem Summary:
Parquet OUTFILE derived Arrow schemas from the internal serialized type of
aggregate-state columns. String-backed states were labeled as UTF-8, while
fixed-length states could not be mapped to Arrow. The import path also
interpreted exported state payloads as text and did not validate fixed-length
payload widths. This PR treats aggregate states as opaque binary at the Arrow
boundary, restores their raw bytes into the original aggregate-state column
type, and rejects malformed fixed-size payloads.
### Release note
Parquet OUTFILE now exports aggregate-state columns as opaque binary and
supports round-trip import of fixed-length states.
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [x] Regression test
- [x] 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.
- [x] Yes. Aggregate-state columns in Parquet OUTFILE now use binary
encoding, and fixed-length states are imported as raw bytes with width
validation.
- Does this need documentation?
- [x] 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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