I’m in this picture and I don’t like it.

Last year, I gave a keynote at AI Council about The Deconstructed Database: a composable and extensible database design enabled by the cloud and a collection of standard open source formats and components. (Parquet, Arrow, Substrait, Iceberg, OpenLineage, Calcite, DataFusion).

I'm speaking today at www.openxdata.ai You can watch my talk online.

My son is selling his mountain bike. www.pinkbike.com/buysell/4171...

Weekend project . Designed and assembled in California.

Thank you for letting me keynote day 2 of the Iceberg summit. I hope you all enjoyed it!

And that’s a wrap! Thank you for a great Iceberg Summit! @thedanicafine.bsky.social, Matt and everyone involved in the organization.

I have LLM jokes, they write themselves.

Paging @dickc

If you want to learn more about the Variant type in Parquet, Aihua Xu and @andrewlamb1111.bsky.social wrote a great blog post on the project blog. parquet.apache.org/blog/2026/02...

Great inaugural post about the geospatial types on the Parquet blog. Thank you Jia Yu, Dewey Dunnington , Kristin Cowalcijk, Feng Zhang. More posts coming ! parquet.apache.org/blog/2026/02...

Apache Arrow is ten years old! I can't believe that Apache board meeting when the project was instated was 10 years ago! This went fast! arrow.apache.org/blog/2026/02...

Congratulations to @andrewlamb1111.bsky.social on becoming the latest Parquet PMC member! Thank you, Andrew, for your leadership in the community. I look forward to our continued collaboration!

File formats! Great references 😎

Happy new year

Bonne année!

And that applies to sparkling wine as well ;)

I always dip the fries in the tartar sauce with my fish and chips.

In the past few years, we’ve seen a cambrian explosion of new columnar formats, challenging the hegemony of Parquet. Presumably, the design of yore is not going to cut it moving forward. I spent some time to understand a bit better how things actually changed. sympathetic.ink/2025/12/11/C...

If you missed my talk "The advent of the open data lake" at AI By the Bay, the recording is now available. ai.bythebay.io/talks/the-ad... www.youtube.com/watch?v=xHGV...

Earthquake!

It turns out that Friday’s NYT’s mini crosswords was written by my 13-year-old.

Parquet praise in the wild :) Nice chatting with you at Datacouncil Hannes! www.youtube.com/watch?v=zeon...

Come say hi, Wednesday at 10am. I'll be speaking at the AI By the Bay Conference about "The Advent of The Open Data Lake". ai.bythebay.io/talks/the-ad...

If you missed me giving it live, the slides of my talk, "Column Storage for the AI era" are available here: docs.google.com/presentation...

Netflix: "We capture over a trillion events a day." Datadog: www.datadoghq.com/blog/enginee....

@openlineage.bsky.social support for Ray by Anyscale www.anyscale.com/blog/announc...

Good evening golden gate.

Higher latency but higher throughput on improving the overall data ecosystem.

"if you want to go fast, go alone; If you want to go far, go together" New Apache Parquet Community page is up: parquet.apache.org/community/

The future of data connectivity is columnar. Today we launched @columnar.tech to accelerate the shift from slow, row-oriented APIs like ODBC and JDBC to >10x faster alternatives powered by @arrow.apache.org. Learn more 👇

Experimenting with the laser cutter to make 3d objects.

This just went in the oven

If you missed my talk: "Data Observability and OpenLineage" at the Datadog summit in SF, here is your chance to catch up on the recording. www.youtube.com/watch?v=uhNo...

Another earthquake

Great time seeing Garbage at the Warfield tonight.

I'm speaking tomorrow at "Embracing AI in Open Source" If you've been wondering why we see a flurry of new columnar formats, come see me present "Column Storage for the AI Era" I'll talk about what has changed, new advances in data encoding and how that's pushing Parquet to evolve. luma.com/pxikwty3

Who’s solving the Louvre robbery? Right answers only

First attempt at making prints with the laser cutter. I don’t know what I’m doing but happy to have made something.

And then he said: « Bring me to your leader! »

Felt it

"It is not 100% clear to me how a new file format (or three) will drive additional ecosystem adoption :thinking:" However, I absolutely think this adds to the pressure for Parquet to evolve. Speaking of, anyone interested in helping add new encodings to parquet? lists.apache.org/thread/djnbb...

"Why Datadog Chose Airflow 3: Multi-Tenancy, Observability, and the Future of Event-Driven Workflows" Zach and I will be talking about how Datadog adopted Airflow 3 at the Airflow summit next week. Come say hi! airflowsummit.org/sessions/202...

Columnar file formats are hot!

I'm trying to understand a bit better real life deployments of open source Clickhouse. If you're using it, what does your deployment look like?

Berkeley just experienced a small earthquake. Check USGS for the official earthquake magnitude: earthquake.usgs.gov/earthquakes/... Remember to drop, cover, and hold on during earthquake shaking.

Woken up by the earth quake!

Catching up in person at the Community over Code conference. Nice to see you all!

I’ll be at the Community over Code Conference in Minneapolis on Thursday and Friday. Come say hi if you’re around. I’m speaking about the deconstructed database Thursday at noon. communityovercode.org/schedule/

A cool blog post by Qi Zhu, Jigao Luo and @andrewlamb1111.bsky.social on embedding custom indices in Parquet files while staying compatible with the standard. datafusion.apache.org/blog/2025/07...