[DIRMINA-1160] mina2.0.22 NioProcessor thread make cpu 100%

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 2.0.22
• Component/s: Core
• Environment: openjdk version "1.8.0_312" ; OpenJDK Runtime Environment (build 1.8.0_312-b07) ; OpenJDK 64-Bit Server VM (build 25.312-b07, mixed mode) ; CentOS Linux release 8.3.2011 ; Kernel: Linux 4.18.0-240.1.1.el8_3.x86_64
• Assignee: Unassigned
• Reporter: Zhang Hua
• Created: 27/Jan/22 06:40
• Updated: 27/Jan/22 12:45
• Resolved: 27/Jan/22 12:45

Description

use mina as mobile game server demo and NioProcessor thread make cpu 100%

thread dump:
"NioProcessor-1" #67 prio=5 os_prio=0 tid=0x00007f9bec01b000 nid=0x466a3 runnable [0x00007f9bd4fdc000]
   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 <0x00000000b632b678> (a sun.nio.ch.Util$3)
        - locked <0x00000000b632b668> (a java.util.Collections$UnmodifiableSet)
        - locked <0x00000000b632b550> (a sun.nio.ch.EPollSelectorImpl)
        at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
        at org.apache.mina.transport.socket.nio.NioProcessor.select(NioProcessor.java:112)
        at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:616)
        at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)

is that nio epollWait bug? please help