2019-01-04 13:30:10.007 DEBUG [grpc-default-worker-ELG-1-4:74] | (io.netty.handler.codec.http2.Http2ConnectionHandler) | [id: 0x28fe9667, L:/172.17.0.3:41414 ! R:/xx.xx.xxx.xxx:7051] Sending GOAWAY failed: lastStreamId '0', errorCode '2', debugData ''. Forcing shutdown of the connection.
java.io.IOException: Broken pipe
        at sun.nio.ch.FileDispatcherImpl.write0(Native Method) ~[?:1.8.0_151]
        at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47) ~[?:1.8.0_151]
        at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93) ~[?:1.8.0_151]
        at sun.nio.ch.IOUtil.write(IOUtil.java:51) ~[?:1.8.0_151]
        at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471) ~[?:1.8.0_151]
        at io.netty.channel.socket.nio.NioSocketChannel.doWrite(NioSocketChannel.java:403) ~[netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannel$AbstractUnsafe.flush0(AbstractChannel.java:934) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.flush0(AbstractNioChannel.java:360) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannel$AbstractUnsafe.flush(AbstractChannel.java:901) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.DefaultChannelPipeline$HeadContext.flush(DefaultChannelPipeline.java:1376) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:776) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeFlush(AbstractChannelHandlerContext.java:768) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.flush(AbstractChannelHandlerContext.java:749) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.handler.ssl.SslHandler.forceFlush(SslHandler.java:1746) [netty-handler-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.handler.ssl.SslHandler.wrapAndFlush(SslHandler.java:757) [netty-handler-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.handler.ssl.SslHandler.flush(SslHandler.java:734) [netty-handler-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:776) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeFlush(AbstractChannelHandlerContext.java:768) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.flush(AbstractChannelHandlerContext.java:749) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.handler.codec.http2.Http2ConnectionHandler.onError(Http2ConnectionHandler.java:619) [netty-codec-http2-4.1.22.Final.jar:4.1.22.Final]
        at io.grpc.netty.AbstractNettyHandler.exceptionCaught(AbstractNettyHandler.java:81) [grpc-netty-1.11.0.jar:1.11.0]
        at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:285) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:264) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:256) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.handler.ssl.SslHandler.exceptionCaught(SslHandler.java:1030) [netty-handler-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:285) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:264) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:256) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.DefaultChannelPipeline$HeadContext.exceptionCaught(DefaultChannelPipeline.java:1381) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:285) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:264) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.DefaultChannelPipeline.fireExceptionCaught(DefaultChannelPipeline.java:933) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.handleReadException(AbstractNioByteChannel.java:112) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:157) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) [netty-transport-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886) [netty-common-4.1.22.Final.jar:4.1.22.Final]
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.22.Final.jar:4.1.22.Final]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]