Hi Kent,
Thanks for reporting, it has previously been reported and is tracked
here: https://bugs.openjdk.org/browse/JDK-8370887
On 2025-11-15 14:17, Kent Dong wrote:
Hi guys,
During our trial of Java 25, we found this bug JDK-8370887
<https://bugs.openjdk.org/browse/JDK-8370887> DelayScheduler.replace
<https://delayscheduler.replace/> method may break the 4-ary heap in
certain scenarios. Since NIO uses virtual threads for poller by
default in Linux, it may affect the timeout of IO operations. If it
can be fix, we would be more confident to use Java 25 and VT in our
production environment.
After a full analysis, we found it is caused by a missing sift-up
branch in DelayScheduler.replace method, and it's not quite hard to
fix. And it stays silent in JBS for quite a while. Is there a
schedule/plan for it to be fixed or maybe we can contribute a fix to it?
Thanks.
Kent Dong
--
Cheers,
√
Viktor Klang
Software Architect, Java Platform Group
Oracle
