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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2023/01/19 06:53:06 UTC

[GitHub] [arrow-rs] Sach1nAgarwal commented on issue #53: [Parquet] Reading parquet file into an ndarray

Sach1nAgarwal commented on issue #53:
URL: https://github.com/apache/arrow-rs/issues/53#issuecomment-1396513788

   Parallel column is increasing the performance. I checked by creating multiple `ParquetRecordBatchStream<Reader>` for each column and all `ParquetRecordBatchStream<Reader>` reading parallely, performance increase from 60Mega Bytes / sec (when single `ParquetRecordBatchStream<Reader>` for a file) to 200 Mega Bytes / sec. Reading a Parquet files, all contains 8 columns and of size of approximately 250MB.


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