CLOSE_WAIT connections when OutOfMemoryError is thrown

[Antonio Rafael Rodrigues]

Hi
In my rest API, everytime time my request generates an OutOfMemoryError the
client doesn't get a response from server and hangs forever. If I kill the
client, I can see by lsof that a CLOSE_WAIT connection remains and it goes
away just if I restart the Spring application.
I can reproduce it easily with an plain Servlet:


public class CustomServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
        System.out.println("Test");
        throw new OutOfMemoryError();
    }
}

Any request to this servlet hangs, if the client gives up  a CLOSE_WAIT
connection remains.

I'd like to know if there is some way to get over it and if it is a bug.

Tomcat  9.0.11
SO: 4.4.0-21-generic #37-Ubuntu SMP x86_64 GNU/Linux
Tomcat embedded in spring-boot-starter-web of spring-boot  2.0.4.RELEASE
JDK: 1.8.0_121 65 bits

Thanks