feat(blob): add BlobType groundwork and preserve DDL semantics#250
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QuakeWang wants to merge 2 commits intoapache:mainfrom
Open
feat(blob): add BlobType groundwork and preserve DDL semantics#250QuakeWang wants to merge 2 commits intoapache:mainfrom
QuakeWang wants to merge 2 commits intoapache:mainfrom
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JingsongLi
reviewed
Apr 16, 2026
| /// | ||
| /// DDL schema translation must use this function instead of going through Arrow, | ||
| /// because Arrow cannot preserve logical distinctions such as `BLOB` vs `VARBINARY`. | ||
| fn sql_data_type_to_paimon_type( |
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If we have this, we should remove sql_data_type_to_arrow.
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Purpose
This PR adds the first groundwork slice for BlobType in
paimon-rust.It introduces
BlobTypeinto the Rust type system, preservesBLOBin DataFusion DDL, and explicitly rejects unsupported write paths.This PR is only a groundwork step for #228, and I will implement
.blobread path for the next pr.Brief change log
DataType::BlobandBlobTypeBinaryin the existing type conversion surfaceBLOBin DataFusion DDL schema translation, instead of silently degrading it toVARBINARYCREATE TABLE/ALTER TABLE ... ADD COLUMN ... BLOBTests
API and Format
API change:
BlobType/DataType::BlobFormat impact:
BLOB.blobfile read support is not included in this PRDocumentation