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# Apache DataFusion Execution

[Apache DataFusion] is an extensible query execution framework, written in Rust, that uses [Apache Arrow] as its in-memory format.

This crate is a submodule of DataFusion that provides execution runtime such as the memory pools and disk manager.

Most projects should use the [`datafusion`] crate directly, which re-exports
this module. If you are already using the [`datafusion`] crate, there is no
reason to use this crate directly in your project as well.

[apache arrow]: https://arrow.apache.org/
[apache datafusion]: https://datafusion.apache.org/
[`datafusion`]: https://crates.io/crates/datafusion
