Assert ServerSocketChannel is not Blocking (#43479) (#43488)

* Assert ServerSocketChannel is not Blocking * Relates #43387 which appears to run into blocking accept calls
elastic · Jun 21, 2019 · 5f87caa · 5f87caa
1 parent 186c312
commit 5f87caa
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/libs/nio/src/main/java/org/elasticsearch/nio/ChannelFactory.java b/libs/nio/src/main/java/org/elasticsearch/nio/ChannelFactory.java
@@ -177,7 +177,9 @@ SocketChannel openNioChannel(InetSocketAddress remoteAddress) throws IOException
 
         SocketChannel acceptNioChannel(ServerChannelContext serverContext) throws IOException {
             ServerSocketChannel rawChannel = serverContext.getChannel().getRawChannel();
+            assert rawChannel.isBlocking() == false;
             SocketChannel socketChannel = accept(rawChannel);
+            assert rawChannel.isBlocking() == false;
             if (socketChannel == null) {
                 return null;
             }