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egruy

Re:Cursed Knowledge on Friday August 08, 2025 @03:16AM (#44834406)
Reminds me a lot of phenomenal Hadoop and Kerberos: Madness beyond the gates[1], which coincidentally saved me many times from madness. Thanks Steve, I can't fathom what you had to go through to get the cursed knowledge!

1 - https://steveloughran.gitbooks.io/kerberos_and_hadoop/conten...

Re:Ask HN: What are you working on? (July 2025) on Sunday July 27, 2025 @04:41PM (#44704518)
I am building Tracelake - a data quality solution for SAP replications.

https://tracelake.com/

Why? SAP holds the most important data for companies that use it, but it's notoriously difficult to replicate this data consistently into a data analytics platform (think Snowflake, Redshift, etc...).

Couple of companies specialize in the SAP replication, but it's hard to validate the correctness of the replicated data, because:

- the SAP data is changing continuously and rapidly

- there are hundreds of tables and TBs of data

Usually it's the consumers of data downstream who notice that the data just "doesn't feel right".

Tracelake adds a validation layer on top of the SAP to X replication, which periodically compares the data between source and target and informs you about any missing / incorrect data, so you can tackle data quality issues proactively.