Gabriel39 opened a new pull request, #65370:
URL: https://github.com/apache/doris/pull/65370
### What problem does this PR solve?
Issue Number: None
Related PR: None
Problem Summary: Reading Iceberg struct fields after Spark schema evolution
can materialize a column whose root nullability does not match the declared
file type used to prepare the cast expression. The cast wrapper unwraps
nullable inputs based on the declared input type, so a nullable declared type
with a non-nullable actual column can hit an invalid unwrap path and crash BE
instead of returning the cast result. This change aligns the declared cast
input root nullability with the actual column shape before executing the cast.
It also adds a focused BE unit test and an Iceberg regression case that creates
a Spark Iceberg struct, evolves col.a from INT to BIGINT, refreshes the Doris
catalog, and queries col.a/col.b/col.c with nested pruning enabled.
### Release note
None
### Check List (For Author)
- Test: Manual test
- Ran git diff --check for modified files
- Ran targeted clang-format v16 wrapper for modified BE C++ files
- Attempted BE unit test: ./run-be-ut.sh --run
--filter=TableReaderTest.ComplexRematerializeCastsNonNullableScalarChildWithNullableFileType:TableReaderTest.ComplexRematerializeCastsScalarChildToTableType,
blocked because local thirdparty/installed is incomplete (missing bin/protoc
and Snappy)
- Attempted regression test: ./run-regression-test.sh --run -d
external_table_p0/iceberg -s test_iceberg_struct_schema_evolution, blocked
because local thirdparty/installed is incomplete (missing bin/thrift)
- 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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