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OpenSearch Transform Job: The Case of the Silent Failure and the Ghost Key
Debugging OpenSearch Transform jobs can feel like searching for a needle in a haystack, especially when the error messages are generic. This post c...
Feb 13, 2026
Hi! I'm Derek Weitzel
Research Associate Professor
I build and operate distributed research infrastructure across OSG, PATh, NRP, IRIS-HEP, and related collaborations.
My focus is reliable data movement, scalable throughput computing, and production-ready scientific services that support research communities over the long term.
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Profiling the XRootD Monitoring Collector
The XRootD Monitoring Collector (collector) receives file transfer accounting messages from XRootD servers.This transfer information is parsed by t...
Jan 31, 2024
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Dashboards for Learning Data Visualizations
Creating dashboards and data visualizations are a favorite past time of mine. Also, I jump at any chance to learn a new technology. That is why I...
Sep 14, 2022
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Improving the Open Science Data Federation's Cache Selection
Optimizing data transfers requires tuning many parameters. High latency between the client and a server can decrease data transfer throughput. The...
Jan 22, 2022
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XRootD Client Manager
The validation project for XRootD Monitoring is moving to phase 2, scaletesting. Phase 1 focused on correctness of single server monitoring. Ther...
Oct 11, 2020
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GRACC Transition Visualization
The OSG is in the progress of transitioning from an older ElasticSearch (ES) cluster to a new version. Part of this process is reindexing (copying...
Mar 08, 2020