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PARQUET-2310: implementation status (#34)
Add outline of implementation status tables. Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>
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| --- | ||
| title: "Implementation status" | ||
| linkTitle: "Implementation status" | ||
| weight: 8 | ||
| --- | ||
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| This page summarizes the features supported by different Parquet | ||
| implementations. | ||
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| *Note*: This is a work in progress and we would welcome help expanding its scope. | ||
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| ### Legend | ||
| The value in each box means: | ||
| * ✅: supported | ||
| * ❌: not supported | ||
| * (blank) no data | ||
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| Implementations: | ||
| * `C++`: [parquet-cpp](https://github.com/apache/arrow/tree/main/cpp/src/parquet) | ||
| * `Java`: [parquet-java](https://github.com/apache/parquet-java) | ||
| * `Go`: [parquet-go](https://github.com/apache/arrow/tree/main/go/parquet) | ||
| * `Rust`: [parquet-rs](https://github.com/apache/arrow-rs/blob/master/parquet/README.md) | ||
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| ### Physical types | ||
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| | Data type | C++ | Java | Go | Rust | | ||
| | ----------------------------------------- | ----- | ------ | ----- | ----- | | ||
| | BOOLEAN | | | | | | ||
| | INT32 | | | | | | ||
| | INT64 | | | | | | ||
| | INT96 (1) | | | | | | ||
| | FLOAT | | | | | | ||
| | DOUBLE | | | | | | ||
| | BYTE_ARRAY | | | | | | ||
| | FIXED_LEN_BYTE_ARRAY | | | | | | ||
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| * \(1) This type is deprecated, but as of 2024 it's common in currently produced parquet files | ||
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| ### Logical types | ||
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| | Data type | C++ | Java | Go | Rust | | ||
| | ----------------------------------------- | ----- | ------ | ----- | ----- | | ||
| | STRING | | | | | | ||
| | ENUM | | | | | | ||
| | UUID | | | | | | ||
| | 8, 16, 32, 64 bit signed and unsigned INT | | | | | | ||
| | DECIMAL (INT32) | | | | | | ||
| | DECIMAL (INT64) | | | | | | ||
| | DECIMAL (BYTE_ARRAY) | | | | | | ||
| | DECIMAL (FIXED_LEN_BYTE_ARRAY) | | | | | | ||
| | DATE | | | | | | ||
| | TIME (INT32) | | | | | | ||
| | TIME (INT64) | | | | | | ||
| | TIMESTAMP (INT64) | | | | | | ||
| | INTERVAL | | | | | | ||
| | JSON | | | | | | ||
| | BSON | | | | | | ||
| | LIST | | | | | | ||
| | MAP | | | | | | ||
| | UNKNOWN (always null) | | | | | | ||
| | FLOAT16 | | | | | | ||
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| ### Encodings | ||
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| | Encoding | C++ | Java | Go | Rust | | ||
| | ----------------------------------------- | ----- | ------ | ----- | ----- | | ||
| | PLAIN | | | | | | ||
| | PLAIN_DICTIONARY | | | | | | ||
| | RLE_DICTIONARY | | | | | | ||
| | RLE | | | | | | ||
| | BIT_PACKED (deprecated) | | | | | | ||
| | DELTA_BINARY_PACKED | | | | | | ||
| | DELTA_LENGTH_BYTE_ARRAY | | | | | | ||
| | DELTA_BYTE_ARRAY | | | | | | ||
| | BYTE_STREAM_SPLIT | | | | | | ||
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| ### Compressions | ||
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| | Compression | C++ | Java | Go | Rust | | ||
| | ----------------------------------------- | ----- | ------ | ----- | ----- | | ||
| | UNCOMPRESSED | | | | | | ||
| | BROTLI | | | | | | ||
| | GZIP | | | | | | ||
| | LZ4 (deprecated) | | | | | | ||
| | LZ4_RAW | | | | | | ||
| | LZO | | | | | | ||
| | SNAPPY | | | | | | ||
| | ZSTD | | | | | | ||
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| ### Other format level features | ||
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| | | C++ | Java | Go | Rust | | ||
| | ----------------------------------------- | ----- | ------ | ----- | ----- | | ||
| | xxxHash-based bloom filters | | | | | | ||
| | Bloom filter length (1) | | | | | | ||
| | Statistics min_value, max_value | | | | | | ||
| | Page index | | | | | | ||
| | Page CRC32 checksum | | | | | | ||
| | Modular encryption | | | | | | ||
| | Size statistics (2) | | | | | | ||
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| * \(1) In parquet.thrift: ColumnMetaData->bloom_filter_length | ||
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| * \(2) In parquet.thrift: ColumnMetaData->size_statistics | ||
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| ### High level data APIs for Parquet feature usage | ||
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| | Format | C++ | Java | Go | Rust | | ||
| | -------------------------------------------- | ----- | ------ | ----- | ----- | | ||
| | External column data (1) | | | | | | ||
| | Row group "Sorting column" metadata (2) | | | | | | ||
| | Row group pruning using statistics | | | | | | ||
| | Reading select columns only | | | | | | ||
| | Page pruning using statistics | | | | | | ||
| | Page pruning using bloom filter | | | | | | ||
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| * \(1) In parquet.thrift: ColumnChunk->file_path | ||
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| * \(2) In parquet.thrift: RowGroup->sorting_columns |