NettyServerRequestResponseChannel NPE
2020/03/31 05:25:11.737 ERROR [RequestHandlerPool] [Thread-1] [ambry-server] [] error when shutting down request handler pool {} java.lang.NullPointerException at java.io.DataInputStream.readFully(DataInputStream.java:195) at java.io.DataInputStream.readLong(DataInputStream.java:416) at com.github.ambry.network.NettyServerRequestResponseChannel.sendRequest(NettyServerRequestResponseChannel.java:41) at com.github.ambry.protocol.RequestHandler.shutdown(RequestHandler.java:64) at com.github.ambry.protocol.RequestHandlerPool.shutdown(RequestHandlerPool.java:65) at com.github.ambry.server.AmbryServer.shutdown(AmbryServer.java:305) at com.linkedin.ambry.server.AmbryLIServer.notifyShutdown(AmbryLIServer.java:66) at com.linkedin.util.factory.lifecycle.LifeCycleMgr.notifyShutdownListener(LifeCycleMgr.java:126) at com.linkedin.util.factory.lifecycle.LifeCycleMgr.notifyListeners(LifeCycleMgr.java:103) at com.linkedin.util.factory.lifecycle.LifeCycleMgr.notifyStop(LifeCycleMgr.java:82) at com.linkedin.util.factory.Generator.stop(Generator.java:211) at com.linkedin.offspring.servlet.OffspringServletRuntime.destroy(OffspringServletRuntime.java:86) at com.linkedin.offspring.servlet.OffspringServletContextListener.contextDestroyed(OffspringServletContextListener.java:49) at org.eclipse.jetty.server.handler.ContextHandler.callContextDestroyed(ContextHandler.java:960) at org.eclipse.jetty.servlet.ServletContextHandler.callContextDestroyed(ServletContextHandler.java:571) at org.eclipse.jetty.server.handler.ContextHandler.stopContext(ContextHandler.java:937) at org.eclipse.jetty.servlet.ServletContextHandler.stopContext(ServletContextHandler.java:381) at org.eclipse.jetty.webapp.WebAppContext.stopWebapp(WebAppContext.java:1503)