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Posted to dev@parquet.apache.org by "steveloughran (via GitHub)" <gi...@apache.org> on 2023/04/12 13:21:42 UTC

[GitHub] [parquet-mr] steveloughran commented on pull request #968: PARQUET-2149: Async IO implementation for ParquetFileReader

steveloughran commented on PR #968:
URL: https://github.com/apache/parquet-mr/pull/968#issuecomment-1505269164

   @hazelnutsgz hadoop 3.3.5 supports vector IO on an s3 stream; async parallel fetch of blocks, which also works on local fs (and with gcs, abfs TODO items). we see significant performance increases there. There's a PR for it, though as it is 3.3.5+ only, not merged in to asf parquet branches unless the move or we finish a shim library to offer (serialized) support for the api on older releases.


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