ARROW-9943: [C++] Recursively apply Arrow metadata when reading from Parquet#8366
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pitrou wants to merge 3 commits intoapache:masterfrom
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ARROW-9943: [C++] Recursively apply Arrow metadata when reading from Parquet#8366pitrou wants to merge 3 commits intoapache:masterfrom
pitrou wants to merge 3 commits intoapache:masterfrom
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pitrou
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Oct 6, 2020
cpp/src/parquet/arrow/schema.cc
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@emkornfield I think you'll be able to add your changes here.
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Also cc @jorisvandenbossche |
…Parquet This allows roundtripping complex types such as `list<dictionary<utf8>>`, `list<extension>`, etc.
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bkietz
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Oct 6, 2020
emkornfield
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| if (origin_type.id() == ::arrow::Type::LIST) { | ||
| return RewrapListField; | ||
| return [](FieldVector fields) { | ||
| DCHECK_EQ(fields.size(), 1); |
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Can a schema be deserialized that has more then 1 field? i.e. should this return a user space error instead?
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Normally no, because we already checked that origin_type->num_fields() == inferred_type->num_fields().
emkornfield
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emkornfield
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Oct 7, 2020
emkornfield
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Will merge if CI green. Thank you for the reviews! |
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This allows roundtripping complex types such as
list<dictionary<utf8>>,list<extension>, etc.