FULL PRODUCT VERSION :
java version "1.8.0_40"
Java(TM) SE Runtime Environment (build 1.8.0_40-b25)
Java HotSpot(TM) 64-Bit Server VM (build 25.40-b25, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
 3.19.0-25-generic #26~14.04.1-Ubuntu SMP

EXTRA RELEVANT SYSTEM CONFIGURATION :
ulimit -n
1024


A DESCRIPTION OF THE PROBLEM :
EPollSelectorImpl doesn't close 2 file descriptors (fd0, fd1) if pollWrapper throws exception:

    EPollSelectorImpl(SelectorProvider sp) throws IOException {
        super(sp);
        long pipeFds = IOUtil.makePipe(false);
        fd0 = (int) (pipeFds >>> 32);
        fd1 = (int) pipeFds;
        pollWrapper = new EPollArrayWrapper();
        pollWrapper.initInterrupt(fd0, fd1);
        fdToKey = new HashMap<>();
    }


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
 - Open many file descriptors: MAX_OPEN_FILE-2
 - Try create epoll selector
 - EPollSelectorImpl opens pipe and consume last 2 descriptors
 - EPollSelectorImpl calls epoll_create syscall
 - EPollSelectorImpl throws IOException without closing pipe


REPRODUCIBILITY :
This bug can be reproduced rarely.