[Java] Adding java read compression files with LZ4 codec #289
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lidavidm
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Jan 5, 2023
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| Java Vector module offer read files without compression codec, in case reading | ||
| compressed files is required consider to also add Java Compression module | ||
| dependency. |
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Suggested change
| Java Vector module offer read files without compression codec, in case reading | |
| compressed files is required consider to also add Java Compression module | |
| dependency. | |
| The ``arrow-vector`` module can only read uncompressed files by itself. Add | |
| a dependency on ``arrow-compression`` to also be able to read compressed files. |
| Read - From Compressed File | ||
| --------------------------- | ||
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| We are providing a path with auto generated arrow files for testing purposes, change that at your convenience. |
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Is it possible to provide a write-compressed-file example too?
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Hmm. There's no practical way to write a compressed file.
| import pyarrow as pa | ||
| pd.DataFrame({'key': range(4)}).to_feather('lz4.arrow', compression='lz4') | ||
| pd.DataFrame({'key': range(4)}).to_feather('zstd.arrow', compression='zstd') |
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Related to #288