Java has these concepts too (ExecutorService since at least Java 5, circa 2004). The problem is not with the JDK libraries, it's been in the JVM's assumption th

Java has these concepts too (ExecutorService since at least Java 5, circa 2004). The problem is not with the JDK libraries, it's been in the JVM's assumption that it's running on bare metal or a VM. Linux containers leak information about the "true" environment in a way that upset JVM assumptions before 9 and 10.