Had a similar bug in a production system about 10 years ago. Indexes got corrupted after some length of time. Only in production, couldn't replicate. A distribu

Had a similar bug in a production system about 10 years ago. Indexes got corrupted after some length of time. Only in production, couldn't replicate. A distributed system as well. We (mainly a collegue of mine) eventually traced it down to a smaller part of the code until we noticed a subtle bug. Multi reader + multi writer and a atomic operation that miscounted the number of readers. Took us a couple of weeks to track down if I remember right. https://issues.redhat.com/browse/ISPN-4777 https://issues.redhat.com/browse/ISPN-4777