Concurrency bugs in Lucene: How to fix optimistic concurrency failures - Elasticsearch Labs
Thanks to Fray, a deterministic concurrency testing framework from CMU’s PASTA Lab, we tracked down a tricky Lucene bug and squashed it
Hasnain says:
Loved this one because deterministic thread scheduling for testing is vastly underrated
“Not all heroes wear capes
Yes, it's cliche – but it's true.
Concurrent program debugging is incredibly important. These tricky concurrency bugs take an inordinate amount of time to debug and work through. While new languages like Rust have built in mechanisms to help prevent race conditions like this, the majority of software in the world is already written, and written in something other than Rust. Java, even after all these years, is still one of the most used languages. Improving debugging on JVM based languages makes the software engineering world better. And given how some folks think that code will be written by Large Language Models, maybe our jobs as engineers will eventually just be debugging bad LLM code instead of just our own bad code. But, no matter the future of software engineering, concurrent program debugging will remain critical for maintaining and building software.
Thank you Ao Li and his colleagues from the PASTA Lab for making it that much better.”
Posted on 2025-02-23T20:11:45+0000