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Not applicable to parquet, but I have used zless/zgrep often on tar.gz-compressed logs.

(I'm not sure what they're doing is actually that efficient though...)

FYI, the Logfile Navigator (https://lnav.org) can display gzipped/bzipped files on the fly. The top-of-tree has new support for automatically unpacking archives to a temporary directory using libarchive and displaying the contents.

https://linux.die.net/man/1/zless

Sadly, it looks like it just pipes to gzip -cdfq.

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