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| og:image:alt | What's Changed
The current UUID vector implementation creates new buffer slices when reading values through holders, which has several drawbacks:
Memory overhead: Each slice creates a new Arro... |
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| vector/src/test/java/org/apache/arrow/vector/complex/writer/TestComplexWriter.java | https://github.com/apache/arrow-java/pull/949/files#diff-95c8e66047464e884f925ef7ca20c26daaf62bb9b3db967ce21af7efdfb31c72 |
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| vector/src/main/java/org/apache/arrow/vector/UuidVector.java | https://github.com/apache/arrow-java/pull/949/files#diff-595f5973f42caccfd900b81b76411986a50028f43fdac83f2f52b39efe0fece9 |
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| apacheGH-948 | https://github.com/apache/arrow-java/issues/948 |
| : Use buffer indexing for UUID vector | https://github.com/apache/arrow-java/pull/949/commits/0016392f90c3c068c2c3d86d9d911937c34bf410 |
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| Use MSB and LSB longs to represent UUID | https://github.com/apache/arrow-java/pull/949/commits/e2ecd178487b4745fb2eb45e9217a846eda959a1 |
| e2ecd17 | https://github.com/apache/arrow-java/pull/949/commits/e2ecd178487b4745fb2eb45e9217a846eda959a1 |
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| Add Uuid vector benchmarks | https://github.com/apache/arrow-java/pull/949/commits/6ac5ddb60f47cada6566cc1fc5df1428743a443e |
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| Revert "Use MSB and LSB longs to represent UUID" | https://github.com/apache/arrow-java/pull/949/commits/091b1c6c30a40640c262b1dcdb9e34d69f415763 |
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| Remove get(UuidHolder) | https://github.com/apache/arrow-java/pull/949/commits/25a573e46908e6dd8fb4a8fb6b4d488275a25d32 |
| 25a573e | https://github.com/apache/arrow-java/pull/949/commits/25a573e46908e6dd8fb4a8fb6b4d488275a25d32 |
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| force-pushed | https://github.com/apache/arrow-java/compare/a2f8f13bb6fd07065c44d27e0d51274e4f79b52a..25a573e46908e6dd8fb4a8fb6b4d488275a25d32 |
| a2f8f13 | https://github.com/apache/arrow-java/commit/a2f8f13bb6fd07065c44d27e0d51274e4f79b52a |
| 25a573e | https://github.com/apache/arrow-java/commit/25a573e46908e6dd8fb4a8fb6b4d488275a25d32 |
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Compare
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| January 15, 2026 14:26 | https://github.com/apache/arrow-java/pull/949#event-22071308666 |
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| Fix rebase issues | https://github.com/apache/arrow-java/pull/949/commits/532ecebc15c462f489e9b6b59a093a30c2138625 |
| 532eceb | https://github.com/apache/arrow-java/pull/949/commits/532ecebc15c462f489e9b6b59a093a30c2138625 |
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Jan 19, 2026
| https://github.com/apache/arrow-java/pull/949#pullrequestreview-3678154238 |
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View reviewed changes
| https://github.com/apache/arrow-java/pull/949/files/532ecebc15c462f489e9b6b59a093a30c2138625 |
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| 71c418c | https://github.com/apache/arrow-java/commit/71c418c2fde3c49d4cfa4ec564514d04f66f71bf |
| Jan 19, 2026 | https://github.com/apache/arrow-java/pull/949#event-22138815931 |
| Please reload this page | https://github.com/apache/arrow-java/pull/949 |
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| Jan 19, 2026 | https://github.com/apache/arrow-java/pull/949#issuecomment-3768445027 |
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| January 19, 2026 13:52 | https://github.com/apache/arrow-java/pull/949#event-22139082609 |
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breaking-change
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enhancement
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19.0.0
| https://github.com/apache/arrow-java/milestone/3 |
|
Improve memory management in UUID vector
| https://github.com/apache/arrow-java/issues/948 |
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