High CPU in Apache HTTP core after JDK update

Issue

• After a JDK update, we are seeing high CPU in threads like below:

"HTTP-Listener I/O dispatcher-2" #288 prio=5 os_prio=0 tid=0x0000562f1d6e4000 nid=0x763a runnable [0x00007f86978c9000]
   java.lang.Thread.State: RUNNABLE
    at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
    at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
    at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)
    at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
    - locked <0x0000000089ec45d0> (a sun.nio.ch.Util$3)
    - locked <0x0000000089ec45c0> (a java.util.Collections$UnmodifiableSet)
    - locked <0x0000000089ec4498> (a sun.nio.ch.EPollSelectorImpl)
    at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
    at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:256)
    at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:105)
    at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:586)
    at java.lang.Thread.run(Thread.java:750)