The correct approach might be to improve DataFusion support in delta-rs. TableProvider is already implemented here: https://github.com/delta-io/delta-rs/blob/main/rust/src/delta_datafusion.rs
I've pinged QP to ask for their advice. Neville On Wed, 9 Jun 2021 at 19:58, Andrew Lamb <al...@influxdata.com> wrote: > I think the idea of DataFusion + DeltaLake is quite compelling and likely > useful. > > However, I think DataFusion is ideally an "embeddable query engine" rather > than a database system in itself, so in that mental model Delta Lake > integration belongs somewhere other than the core DataFusion crate. > > My ideal structure would be a new crate (maybe not even part of the Apache > Arrow Project), perhaps called `datafusion-delta-rs`, that contained the > TableProvider and whatever else was needed to integrate DataFusion with > DeltaLake > > This structure could also start a pattern of publishing plugins for > DataFusion separately from the core. > > Andrew > p.s. now that Arrow is publishing more incrementally (e.g. 4.1.0, 4.2.0, > etc), I think delta-rs[1] and datafusion both only specify `4.x` so they > should work together nicely > > https://github.com/delta-io/delta-rs/blame/main/rust/Cargo.toml > > On Wed, Jun 9, 2021 at 2:29 AM Daniël Heres <danielhe...@gmail.com> wrote: > > > Hi all, > > > > I would like to receive some feedback about adding Delta Lake support to > > DataFusion (https://github.com/apache/arrow-datafusion/issues/525). > > As you might know, Delta Lake <https://delta.io/> is a format adding > > features like ACID transactions, statistics, and storage optimization to > > Parquet and is getting quite some traction for managing data lakes. > > It seems a great feature to have in DataFusion as well. > > > > The delta-rs <https://github.com/delta-io/delta-rs> project provides a > > native, Apache licensed, Rust implementation of Delta Lake, already > > supporting a large part of the format and operations. > > > > The first integration I would like to propose is adding read support via > a > > new TableProvider. There might be some work to do around dependencies as > > both DataFusion and delta-rs rely on (certain versions of) Arrow and > > Parquet. > > > > Let me know if you have any further ideas or concerns. > > > > Best regards, > > > > Daniël Heres > > >
