gemini-code-assist[bot] commented on PR #36780:
URL: https://github.com/apache/beam/pull/36780#issuecomment-3514059768
## Summary of Changes
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pull request and will post my feedback shortly. In the meantime, here's a
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This pull request resolves an issue (apache/beam#36778) by enhancing the
robustness of schema handling for Apache Iceberg integration within Apache
Beam. It achieves this by explicitly defining the field order for several
Iceberg-related classes ("ReadTask", "ReadTaskDescriptor", and "SnapshotInfo")
using the "@SchemaFieldNumber" annotation. This ensures consistent and reliable
schema generation and serialization when these classes are processed by Beam's
"SchemaCoder", and the correctness is verified by a new dedicated test.
### Highlights
* **Schema Field Numbering**: Introduced "@SchemaFieldNumber" annotations to
key Iceberg-related classes ("ReadTask", "ReadTaskDescriptor", "SnapshotInfo")
to explicitly define the field order for "SchemaCoder".
* **Improved Schema Stability**: This change ensures that the "SchemaCoder"
correctly maps fields, preventing potential issues related to field reordering
or ambiguity, particularly for classes like "SnapshotInfo" which have multiple
fields.
* **New Test Case**: A new unit test ("testSnapshotInfoSchemaFieldNumbers")
was added to "IcebergReadSchemaTransformProviderTest" to validate the correct
application and ordering of "@SchemaFieldNumber" annotations for the
"SnapshotInfo" class.
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