rok opened a new pull request, #241: URL: https://github.com/apache/parquet-format/pull/241
As proposed in https://github.com/apache/arrow/issues/34510 and on [ML](https://lists.apache.org/thread/khco6z9kd1spxlokrjxhyy83x9ogvtdm), [PARQUET-2474](https://issues.apache.org/jira/browse/PARQUET-2474). Arrow recently introduced [FixedShapeTensor](https://arrow.apache.org/docs/format/CanonicalExtensions.html#fixed-shape-tensor) and [VariableShapeTensor](https://arrow.apache.org/docs/format/CanonicalExtensions.html#variable-shape-tensor) canonical extension types that use FixedSizeList and StructArray(List, FixedSizeList) as storage respectfully. These are targeted at machine learning and scientific applications that deal with large datasets and would benefit from using Parquet as on disk storage. However currently FixedSizeList is stored as List in Parquet which adds significant conversion overhead when reading and writing as [discussed here](https://github.com/apache/arrow/issues/34510). It would therefore be beneficial to introduce a FIXED_SIZE_LIST logical type to Parquet. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
