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Posted to github@arrow.apache.org by "zeroshade (via GitHub)" <gi...@apache.org> on 2025/04/28 18:42:11 UTC

Re: [I] Bug: Zstd setting compression level has no effect on output file [arrow-go]

zeroshade commented on issue #360:
URL: https://github.com/apache/arrow-go/issues/360#issuecomment-2836164119

   Parquet doesn't actually *store* the compression level in the metadata at all. It only stores a string enum value to identify the compression codec used. The level being reported as '1' in that output is actually because the rust implementation of parquet uses a default level of 1 for instantiating the Zstd codec. See https://github.com/manojkarthick/pqrs/issues/53 :smile: hope that helps!


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