• Currently the Linux implementation of TcpSocketManager is set to use the SELECT implementation
• The EPOLL implementation on Linux is hanging on epoll_wait

There may be dropped events that occur before epoll_wait is called, causing a block on the thread. In order to handle large number of sockets, EPOLL is preferred over SELECT. We need to investigate and fix the epoll wait blocking issue in order to re-enable EPOLL for TCP+Linux.