JDK-8370887 DelayScheduler Bug Discussion

[Kent Dong]

Hi guys,


During our trial of Java 25, we found this bug JDK-8370887 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
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