下午上线一个新功能，突然其中一台服务器出现问题，然后找到异常信息，如下：
[code]
[2009-02-26 17:27:40] java.io.IOException: Operation not permitted
[2009-02-26 17:27:40] at sun.nio.ch.EPollArrayWrapper.epollCtl(Native Method)
[2009-02-26 17:27:40] at sun.nio.ch.EPollArrayWrapper.updateRegistrations(EPollArrayWrapper.java:202)
[2009-02-26 17:27:40] at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:183)
[2009-02-26 17:27:40] at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
[2009-02-26 17:27:40] at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
[2009-02-26 17:27:40] at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
[2009-02-26 17:27:40] at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:84)
[/code]
结果google一搜索，发现是jdk的bug：
(se) epoll based Selector throws java.io.IOException: Operation not permitted during load
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6481709
再看一看服务器上的jdk版本：
lizongbo@618119_com:~> java -version
java version “1.6.0″
Java(TM) SE Runtime Environment (build 1.6.0-b105)
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0-b105, mixed mode)
于是先重启resin，然后升级jdk。
上次遇到的问题，也是jdk的bug，参考：
服务器从jdk1.6.0升级到1.6.0_12的过程记录
http://618119.com/archives/2009/02/21/136.html
升级之后：
lizongbo@618119_com:~> java -version
java version “1.6.0_12″
Java(TM) SE Runtime Environment (build 1.6.0_12-b04)
Java HotSpot(TM) 64-Bit Server VM (build 11.2-b01, mixed mode)