[GitHub] [iceberg] rdblue commented on pull request #5670: core: snappy as default for parquet compession

[GitBox <gi...@apache.org>]

rdblue commented on PR #5670:
URL: https://github.com/apache/iceberg/pull/5670#issuecomment-1233264708

   From the fairly broad testing that I've done, snappy is never a good choice for compression. This choice depends on what you want to optimize. Snappy is often fast, but gets very poor compression rates. LZ4 is a much better choice if you're optimizing for write speed because it is usually faster and smaller than snappy. But if you're optimizing for compression, I probably wouldn't choose LZ4.


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