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java.nio.channels.CancelledKeyException: 	at sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:55)	at sun.nio.ch.SelectionKeyImpl.interestOps(SelectionKeyImpl.java:59)	at sun.nio.ch.SocketChannelImpl.translateAndSetReadyOps(SocketChannelImpl.java:415)	at sun.nio.ch.AbstractPollSelectorImpl.updateSelectedKeys(AbstractPollSelectorImpl.java:93)	at sun.nio.ch.PollSelectorImpl.doSelect(PollSelectorImpl.java:65)	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:62)	at com.teamon.util.net.IOPumpNIO.run(IOPumpNIO.java:151)	at java.lang.Thread.run(Thread.java:536)