Apache DataFusion Comet 0.16.0 is now available, and I’m pretty excited about this one! Comet now has first-class support for Spark 4.0 and 4.1 with full ANSI support for overflow checks, ANSI casts, try_* variants of some expressions, all accelerated. datafusion.apache.org/blog/output/...

There's a new DataFusion subproject to provide official Java bindings. It's very early, and it's a great time for new contributors to get involved! github.com/apache/dataf...

Much of this write up is true, although it mixes me up with @andrewlamb1111.bsky.social in places. It also neglects to mention the hard work of literally hundreds of people in the community that took my initial donations and transformed them into something amazing today.

PR just landed to add Delta Lake support to Apache DataFusion's Comet accelerator for Apache Spark. Anyone interested in helping with reviews? I do not have much experience with Delta Lake. github.com/apache/dataf...

Helpful advice. Thanks, Claude.

I've posted my latest recap of the world of databases: www.cs.cmu.edu/~pavlo/blog/... All the hot topics from the last year: • More Postgres action! • MCP for everyone! • MongoDB gets litigious with FerretDB! • File formats! • Market movements! • The richest person in the history of the world!

Is there anyone in my network with DuckDB skills who could review a PR that runs a Python script to compare the performance of DataFusion and DuckDB for some simple SQL queries? github.com/apache/dataf...

There is a new Comet issue to discuss the future of Iceberg support and whether we should focus on using the iceberg-rust or Java implementation of Iceberg. Please add your thoughts if this is something that you care about! github.com/apache/dataf...

On behalf of the DataFusion PMC, I'm excited to announce the release of version 0.11.0 of the Comet accelerator for Apache Spark! datafusion.apache.org/blog/2025/10...

It’s steak night tonight and our dog is patiently waiting for her share.

I like the name “RAD stack” for this.

Check out the latest release of the Comet accelerator for Apache Spark datafusion.apache.org/blog/2025/09...

Introducing Iron Vector: native, columnar, vectorized, high-performance accelerator for Apache Flink SQL and Table API built on top of Rust, Arrow and DataFusion. Reduce your Flink compute cost by up to 2x or handle 2x more data with the same infrastructure.

We received reports of a phishing campaign targeting crates​.io users. Do not click on links asking to authenticate to protect your account. More information: blog.rust-lang.org/2025/09/12/c...

Thanks to @clflushopt.bsky.social, make massive TPCH datasets with tpchgen-cli 2.0: SF1000 (1TB raw, 220GB in @ApacheParquet ) in less than 10 mins (6m45s) on aging laptop Try it now: pip install tpchgen-cli tpchgen-cli --scale-factor 1000 --parts 100 --format=parquet github.com/clflushopt/t...

I've been helping our analytics team integrate our DataFusion-based query engine for Postgres into EDB Postgres Distributed and finally here's an end-to-end demo. You get HA Postgres plus seamless replication and DataFusion-based queries. This query turned out 6x faster than PG.

How my day is going

We now have a roadmap section in the Comet contributor guide, in case anyone was wondering what we are focusing on lately and what features will be arriving in future releases. datafusion.apache.org/comet/contri...

Cassandra Team at Apple is searching for a fresh grad / person early in their career to join our ranks in SF/Bay Area! Come work on super interesting problems with world class team. Help us build better Cassandra! Ping me if you’re interested! jobs.apple.com/en-us/detail...

It took me a really long time to understand the flow of execution between JVM and native code during query execution in Comet. I wish I had thought about adding a tracing capability earlier. github.com/apache/dataf...

We're pleased to announce that Apache DataFusion in Python 46.0.0 is released! Since the last announcement post we've had a lot of great features and new contributors. Please check out the blog post with details. datafusion.apache.org/blog/2025/03... #DataFusion #Python #DataFrame #PyData #Apache

We have a position open in the Spark team at Apple, in our Cupertino, CA office. The role would include working on Apache DataFusion Comet. jobs.apple.com/en-us/detail...

Here's the blog post announcing Comet 0.7.0 datafusion.apache.org/blog/2025/03...

DataFusion Comet 0.7.0 is now available in Maven. We'll be publishing a blog post next week with all the details. The repo has been updated with the latest benchmark results. For single executor TPC-H @ 100 GB, we now see a 2.2x increase over Spark (up from 2x in 0.6.0). github.com/apache/dataf...

One month on, and I have zero regrets about quitting Facebook & Instagram. I have replaced the scrolling time with listening to podcasts. I now stay in touch with family overseas via email and photo sharing, and I use Snapchat for sharing photos with immediate family, privately. Works great.

Chris Riccomini (@chris.blue) shares his thoughts on Open Source foundations: Apache, CNCF, Commonhaus. He also explains why Commonhaus is a better fit for SlateDB cnr.sh/posts/compar...

Comet 0.6.0 has been released. This is a smaller release than usual now that we have moved to an approximately monthly release cadence to match core DataFusion. datafusion.apache.org/blog/2025/02...

Ballista 43.0.0 has been released, and now provides seamless integration with DataFusion. datafusion.apache.org/blog/2025/02...

Check out this excellent presentation from @robtandy.bsky.social on his work with the DataFusion Ray project from last week's DataFusion community meetup. It is a great overview of how to build a distributed system on top of DataFusion. www.youtube.com/watch?v=ceTo...

This Week in DataFusion Comet (Jan 26): github.com/apache/dataf...

I've finally decided to quit using Facebook. My feed is overwhelmed with nonsense content that I am not interested in and cannot seem to block. It is a real shame, though, because it was a good way to stay connected with family. Is there a viable alternative? What are others using instead?

This week in DataFusion Comet (Jan 18). Inspired by @andrewlamb1111.bsky.social's weekly updates in DataFusion core, I am going to start doing the same in Comet to help keep the community updated on current events. github.com/apache/dataf...

DataFusion Comet 0.5.0 has been released. See blog post for details. datafusion.apache.org/blog/2025/01...

2025 is shaping up to be a breakout year for fast query result transfer with Apache Arrow. But what exactly makes it so fast? David Li, Matt Topol, and I break it down in this new blog post: arrow.apache.org/blog/2025/01...

DataFusion Comet performance has been improving recently and now demonstrates a ~2x speedup compared to Spark for single node TPC-H. There is more to do, but this feels like a significant milestone. github.com/apache/dataf...

Buckle up because we're banging into the new year with my annual retrospective of the last year in databases! Highlights include license change blowback, Databricks vs. Snowflake gangwar, @duckdb.org's shotgun weddings, and buying a quarterback to impress your lover: www.cs.cmu.edu/~pavlo/blog/...

The latest in my set of career advice: How to maintain a healthy work-life balance by setting boundaries. I'm moving these over to blog posts on my website for easier sharing. #CareerPlusPlus #WorkAdvice

Yet another impressive DataFusion Python release. This time with interoperability improvements with PyCapsule and FFI. datafusion.apache.org/blog/2024/12...

1/5 Just made my first contribution to the #Datafusion #Comet - a native physical execution engine for #Apache #Spark! 🚀 While Spark with it's row oriented model and code generation approach is quite good on average, there is almost always a faster specific solution.

"We want to remove DataFusion from everything" 😭 It's good to hear detailed feedback for a use case where DataFusion didn't work out—some important lessons. youtu.be/Sor3KZpmbHg?...

Apache DataFusion Comet 0.4.0 has been released! See the blog post for details. datafusion.apache.org/blog/2024/11...

Apache DataFusion's Ballista distributed query engine has quietly been getting a makeover over the past several months. I'm excited to see the project being maintained again! Performance is 🔥. See the updated README for more information. github.com/apache/dataf...

What a brilliant use of AI! news.virginmediao2.co.uk/o2-unveils-d...

If you’re wondering what all the fuss is about lately, this is what’s driving the adoption of Iceberg to implement the Open Data Lake. sympathetic.ink/2024/11/07/T... It’s all columnar data in blob storage anyways. You may as well be the one taking advantage of it.

So I have this theory that DataFusion, despite being a SQL engine, will actually enable a new breed of data systems to create non-SQL languages for working with data. Here's the idea...🧵

I recently set up a small k8s cluster in my basement. It consists of two gaming PCs connected with a 2.5g switch. For a reasonable cost (<$4k), it gives me 64 cores and 256MB RAM. It has turned out to be a game changer for iterating on local performance tuning & benchmarking.

This is a really interesting talk on building a domain-specific database (Bioinformatics) with DataFusion. www.youtube.com/watch?v=fltZ...

I see that the NVIDIA RAPIDS team has published their first Rust crate (that I know of). I'd love to see them do the same for the cuDF DataFrame library. crates.io/crates/cuvs

DataFusion was named one of the 10 coolest open-source software tools of 2024. www.crn.com/news/softwar...

If you're interested in learning more about accelerating Apache Spark with Apache DataFusion's Comet subproject, check out this talk I recently gave as part of CMU's Database Building Blocks Seminar Series. We'd love for more people to try out Comet and give us feedback! youtu.be/o59s0d3HE1k?...