[DIRMINA-1167] mina2.0.8 NioProcessor thread make cpu 100%

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 2.0.8
• Component/s: Core
• Environment: Linux version 4.18.0-193.el8.x86_64 ; java.version 1.8.0_202
• Assignee: Unassigned
• Reporter: Kazunari Nakao
• Created: 24/Jun/22 04:52
• Updated: 27/Jun/22 08:17
• Resolved: 27/Jun/22 08:15

Description

Using SSHD (sshd-core-0.14.0) with our product, CPU 100% in NioProcessor thread.

"NioProcessor-11" #2262170 prio=5 os_prio=0 tid=0x00007f4ec6020800 nid=0x157b9e runnable [0x00007f4e9aeef000]
   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 <0x00000000e0932158> (a sun.nio.ch.Util$3)
	- locked <0x00000000e0932148> (a java.util.Collections$UnmodifiableSet)
	- locked <0x00000000e0931f10> (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:97)
	at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1074)
	at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

   Locked ownable synchronizers:
	- <0x00000000e0a089a8> (a java.util.concurrent.ThreadPoolExecutor$Worker)


"NioProcessor-13" #2269881 prio=5 os_prio=0 tid=0x00007f4ec4c53800 nid=0x1628d1 runnable [0x00007f4eb61d4000]
   java.lang.Thread.State: RUNNABLE
	at sun.nio.ch.EPollArrayWrapper.interrupt(Native Method)
	at sun.nio.ch.EPollArrayWrapper.interrupt(EPollArrayWrapper.java:317)
	at sun.nio.ch.EPollSelectorImpl.wakeup(EPollSelectorImpl.java:207)
	- locked <0x00000000e0931da0> (a java.lang.Object)
	at org.apache.mina.transport.socket.nio.NioProcessor.wakeup(NioProcessor.java:113)
	at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1163)
	at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

   Locked ownable synchronizers:
	- <0x00000000e0a1cc48> (a java.util.concurrent.ThreadPoolExecutor$Worker)


"NioProcessor-10" #1144555 prio=5 os_prio=0 tid=0x00007f4ec5f78000 nid=0xf3d93 runnable [0x00007f4ea2081000]
   java.lang.Thread.State: RUNNABLE
	at sun.nio.ch.EPollArrayWrapper.interrupt(Native Method)
	at sun.nio.ch.EPollArrayWrapper.interrupt(EPollArrayWrapper.java:317)
	at sun.nio.ch.EPollSelectorImpl.wakeup(EPollSelectorImpl.java:207)
	- locked <0x00000000e0932860> (a java.lang.Object)
	at org.apache.mina.transport.socket.nio.NioProcessor.wakeup(NioProcessor.java:113)
	at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1163)
	at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

   Locked ownable synchronizers:
	- <0x00000000e0975c90> (a java.util.concurrent.ThreadPoolExecutor$Worker)

I am doing a machine translation, so please forgive any unnatural parts.

CPU is at 100% in 3 threads.
Is this the same bug as DIRMINA-1006? 
If it is the same as DIRMINA-1006
If it is the same as DIRMINA-1006, please let me know how to reproduce it so that it does not recur.

plese help.

mina2.0.9 NioProcessor thread make cpu 100%
https://issues.apache.org/jira/browse/DIRMINA-1006