2 ms·
you can run sql DB over compressed filesystem, and some DBs allow you to compress tables too > like being able to deserialize a single column without having t
by riku_iki 8y ago
you can run sql DB over compressed filesystem, and some DBs allow you to compress tables too
> like being able to deserialize a single column without having to read in entire rows.
and it reads filesystem's whole page anyway
- aeroevan 8y agoSorry for the late reply, but parquet is a columnar format so if it's big enough data, you should have multiple pages/blocks of data in a single column for a specific row group, and then be able to seek to the next row group and sequentially read the next set of blocks.