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julien.ledem.net
Principal Engineer, Founder, Angel, Advisor, OSS. LFAI&data: OpenLineage, Marquez, ASF: Parquet, Arrow, Iceberg, 🐖 he/him. Me: https://julien.ledem.net/ Blog: https://sympathetic.ink
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The way we are treating Ukraine is shameful.

Lately, I've been thinking about the topic of architecture in a bottom up culture. So I decided to write down some thoughts. sympathetic.ink/2025/02/13/B...

"As an org grows, complexity increases to a point when nobody can have a clear picture of how things works. Every time you change something, you break something. That incentivizes adding more to the pile of increasing complexity" Bottom up Architecture: sympathetic.ink/2025/02/13/B...

My thoughts exactly

"Changing something will often impact other teams whether we are aware of it or not. Giving agency to the people who are going to be accountable for executing on those decisions, introduces the expectation to consider the impact of those decisions on other teams." sympathetic.ink/2025/02/13/B...

Laser cutter project. 3D map of Kirkwood CA. V1 on the left, v2 on the right

I’ve engraved a few coasters for our mountain home. Should I open an Etsy shop?

"As an org grows, complexity increases to a point when nobody can have a clear picture of how things works. Every time you change something, you break something. That incentivizes adding more to the pile of increasing complexity" Bottom up Architecture: sympathetic.ink/2025/02/13/B...

Lately, I've been thinking about the topic of architecture in a bottom up culture. So I decided to write down some thoughts. sympathetic.ink/2025/02/13/B...

🗽🛫🥱😴🛬🌁

Hi Bluesky, it's OpenLineage, the standard open framework for data lineage collection and analysis. For a quick intro to the project, read this oldie-but-goodie early blog post about the inspiration behind the project by @julien.ledem.net : openlineage.io/blog/openlin....

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 is an excellent example of using DataFusion's flexible APIs to make a multi-node engine building on the single node engine as a building block. 👏 for Robert Tandy for the really cool project.

🌁🛫🧑‍💻🛬🗽

Thing I said recently that I could put in my bio: « I’m old enough that I saw Twin Peaks on TV when it came out » #humblebrag

On the bright side, when nobody has any money anymore, everything will be very cheap. 🤨

The most ominous part of the headline : « ‘once in a lifetime‘ » is only true if your lifetime ends soon.

Pourquoi le changement climatique détruit la pêche? Didier Gascuel "On a longtemps pensé qu'on aurait des zones avec des pertes et d'autres avec des gains. A présent on se rend compte que les pertes sont beaucoup plus importantes" #Greenletterclub #UNOC youtube.com/watch?v=Rn38...

I wonder what the guy who started his company in a college dorm means when he wants more « masculine energy »

I am jet lagged from the holiday break in the same time zone ...

What are the best data conferences this year? 👀 #databs

One underrated career skill is the ability to be happy for the success of others.

Happy new year to the west coast people who celebrate the New York City ball drop.

Is everyone opening a Bluesky account during the winter break?

Name a non-LOTR character that could resist the One Ring.

This presentation by @julien.ledem.net deserves far more views given its informative content and great insights! youtu.be/qpJ5izI7vKQ?...

I've been using my mac with 2 (different) external monitors and that throws off macos. I keep finding either the windows all back to the same workspace or workspaces re-assigned to different monitors it comes back from sleep. Is there a solution to this? ("automatically rearrange" is off)

Hey! If I know you and am not following you please give me a holler!

Time to repost?

Don't miss @harel.bsky.social's presentation of OpenLineage at Re:Invent on Friday as part of the AWS DataZone support for OpenLineage. registration.awsevents.com/flow/awseven...

Age yourself with your first computer.

The growth of Bluesky has been wild. I have now more followers here than on Twitter.