feat: add PrimitiveType::Variant to iceberg spec#2423
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Shekharrajak wants to merge 3 commits intoapache:mainfrom
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feat: add PrimitiveType::Variant to iceberg spec#2423Shekharrajak wants to merge 3 commits intoapache:mainfrom
Shekharrajak wants to merge 3 commits intoapache:mainfrom
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This have some overlap with #2188 but its is minimal start. |
Shekharrajak
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Which issue does this PR close?
#2411
What changes are included in this PR?
• Adds PrimitiveType::Variant to the Iceberg type system (spec v3)
• Implements Display — serializes as "variant" per Iceberg spec
• Implements compatible() — returns false for all literals (no scalar predicate against Variant)
• Adds Avro mapping — AvroSchema::Bytes (opaque, no natural Avro equivalent)
• Adds PrimitiveType::Variant to the canonical primitive_type_serde test
• Adds targeted tests: Display output, serde round-trip, literal incompatibility
Are these changes tested?
Unit tests
What this PR does NOT do (follow-up):
• Arrow schema mapping (DataType::Struct + VariantType extension)
• arrow_field_to_type reverse mapping
• Metrics evaluator statistics suppression
• Iceberg scan/write path support