Jdk nio SelectionKey bug, nioselectionkey

Jdk nio SelectionKey bug, nioselectionkey

This bug occurs when elasticSearch is used in this project because the nio event selector, in the feature kernel and in jdk6, contains a bug where the thread is not hold and events are obtained through endless loops, this results in high CPU usage;

This bug has been fixed on the official website: http://bugs.java.com/bugdatabase/view_bug.do? Bug_id = 6403933

 

If the version is not upgraded,

System. setProperty ("org. elasticsearch. common. netty. epollBugWorkaround", true); add this code.

Fixed solution on the official website: removed the selector and created a new one.

If (SelectionKey! = Null) {// the key you registered on the temporary selector SelectionKey. cancel (); // cancel the SelectionKey that was registered with the temporary selector // flush the canceled key temporarySelector. selectNow ();} which is safe. now everything works fine.