[AURON #1850] Add FlinkArrowUtils for Flink-Arrow type conversion #1959
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Part 1 of Flink RowData to Arrow conversion implementation. This PR adds the foundational type conversion utilities: - FlinkArrowUtils: Bidirectional conversion between Flink LogicalType and Arrow types - Support for all common Flink types including primitives, temporal, and complex types - Comprehensive unit tests for type conversion
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Pull request overview
This PR introduces foundational type conversion utilities for Flink-Arrow integration as part 1 of a 3-part implementation series. It adds FlinkArrowUtils with methods to convert Flink LogicalTypes to Arrow types, supporting primitives, temporal types, and complex structures (arrays, maps, rows).
Changes:
- Added
FlinkArrowUtilsclass with one-way conversion from Flink LogicalType to Arrow types - Added comprehensive unit tests covering all supported type conversions
- Added Arrow and Flink table dependencies to support the conversion utilities
Reviewed changes
Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| auron-flink-extension/auron-flink-runtime/src/main/java/org/apache/auron/flink/arrow/FlinkArrowUtils.java | Core utility class implementing Flink-to-Arrow type conversion with methods for types, fields, and schemas, plus a shared ROOT_ALLOCATOR for Arrow memory management |
| auron-flink-extension/auron-flink-runtime/src/test/java/org/apache/auron/flink/arrow/FlinkArrowUtilsTest.java | Comprehensive test suite covering basic types, complex types (arrays, rows, maps), temporal types, and error handling |
| auron-flink-extension/auron-flink-runtime/pom.xml | Added Arrow dependencies (arrow-c-data, arrow-memory-unsafe, arrow-vector) and test dependencies (junit-jupiter-api) |
| .gitignore | Added LSP-related files (*.prefs) to ignore list |
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...xtension/auron-flink-runtime/src/main/java/org/apache/auron/flink/arrow/FlinkArrowUtils.java
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…ache/auron/flink/arrow/FlinkArrowUtils.java Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Summary
Part 1/3 of Flink RowData to Arrow conversion implementation (split from #1930).
This PR adds the foundational type conversion utilities:
FlinkArrowUtils: Conversion form Flink RowData to Arrow typesFollow-up PRs
Test plan
./auron-build.sh --pre --sparkver 3.5 --scalaver 2.12 -DskipBuildNative./dev/reformatRelated: #1850