# parquet-full

> parquet-full, a magmalake tin: Every Parquet codec the spec defines: parquet-mojo, plus ZSTD, BROTLI and LZ4 through libzstd, libbrotli and liblz4. It lives in the full/ directory of the parquet repository and depends on parquet-mojo, so adding it gives you both, and the import is unchanged.

[magmalake](https://magmalake.dev/) [parquet-full](https://magmalake.dev/s/parquet-full)

Every Parquet codec the spec defines: parquet-mojo, plus ZSTD, BROTLI and LZ4 through libzstd, libbrotli and liblz4\. It lives in the full/ directory of the parquet repository and depends on parquet-mojo, so adding it gives you both, and the import is unchanged.

Install

mojoshelf:

```
pixi shelf add parquet-full-mojo
```

`pixi shelf` comes with mojoshelf: [install it first](https://mojoshelf.org/getting-started).

plain pixi:

```
pixi init app -c https://conda.modular.com/max -c conda-forge && cd app
sed -i.bak 's/^\[workspace\]/[workspace]\npreview = ["pixi-build"]/' pixi.toml
pixi add "mojo-compiler==1.2.0"
# Without mojoshelf: the tin as a git dependency at its published commit.
# Transitive dependencies may be wrong: pixi takes the tin's own git deps as
# pinned in its pixi.toml, which may not match what other tins pin, and then
# fails with "duplicate records". mojoshelf picks revisions that agree.
pixi add parquet-full-mojo --git https://github.com/magmalake/parquet.mojo --rev c15f51aee06ccf73102810e7de143745abba6c90 --subdirectory full
```

No mojoshelf needed. If pixi reports duplicate records, the mojoshelf tab picks revisions that agree.

Version

`0.1.8` on mojoshelf

Source

[GitHub](https://github.com/magmalake/parquet.mojo) [README](https://github.com/magmalake/parquet.mojo#readme)

## Works today

- Take it unless you control the files you read: ZSTD is what most Parquet in the wild uses, Iceberg included
- A reader without it that meets one of these codecs raises an error naming it
- A consumer that never needs ZSTD never builds the three C libraries

Checked against A write and read round trip through each of the three codecs, and the ZSTD-compressed Iceberg fixtures

- [parquet](https://magmalake.dev/s/parquet) read · write · every encoding · Arrow out
- [avro](https://magmalake.dev/s/avro) object container files, both ways
- [arrow-mlake](https://magmalake.dev/s/arrow-mlake) Arrow layout · C Data Interface · IPC
- [roaring](https://magmalake.dev/s/roaring) 32/64-bit · deletion vectors
- [Every tin](https://magmalake.dev/tins)

[A magmalake project](https://magmalake.dev/)

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