[jira] [Commented] (HADOOP-6429) Server listener binds to wrong IP address for domain name given

["Christopher Tubbs (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-6429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15191505#comment-15191505 ] 

Christopher Tubbs commented on HADOOP-6429:
-------------------------------------------

I wonder if this is related to HADOOP-12918?

> Server listener binds to wrong IP address for domain name given
> ---------------------------------------------------------------
>
>                 Key: HADOOP-6429
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6429
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 0.22.0
>         Environment: Ubuntu Linux,  kernel 2.6.24-25-server, x86_64 architecture.  Java 1.6.0., OpenJDK.  Server has 4 physical Ethernet cards,  configured as follows: {{eth0}} is assigned an IP address {{external-ip}}.  {{eth1}}-{{eth3}} are bonded as {{bond0}}, which is assigned an IP address {{internal-ip}}.  This server has two dns entries: {{external-dns}} which resolves to {{external-ip}} and {{internal-dns}} which resolves to {{internal-ip}}.
>            Reporter: Eric Anderson
>
> High-level: 
> In my configuration files, I specifiy:
> {code:xml} 
> <property>
>     <name>fs.default.name</name>
>     <value>hdfs://{{internal-dns}}:8020</value>
>  </property>
> {code}
> The name node server binds to address {{external-ip}}:8020, while all the data nodes try to connect to {{internal-ip}}:8020, and nothing works.
> Low-level: I've traced this down as far as {{org.apache.hadoop.ipc.Server}}, private class {{Listener}}.  
> {code:java}
>   /** Listens on the socket. Creates jobs for the handler threads*/
>   private class Listener extends Thread {
>     
>     private ServerSocketChannel acceptChannel = null; //the accept channel
>     private Selector selector = null; //the selector that we use for the server
>     private InetSocketAddress address; //the address we bind at
>     private Random rand = new Random();
>     private long lastCleanupRunTime = 0; //the last time when a cleanup connec-
>                                          //-tion (for idle connections) ran
>     private long cleanupInterval = 10000; //the minimum interval between 
>                                           //two cleanup runs
>     private int backlogLength = conf.getInt("ipc.server.listen.queue.size", 128);
>     
>     public Listener() throws IOException {
>       address = new InetSocketAddress(bindAddress, port);
>       LOG.info("in Server/Listener. bindAddress=" + bindAddress + ", address="+address);    //Added by EA for testing
>       // Create a new server socket and set to non blocking mode
>       acceptChannel = ServerSocketChannel.open();
>       acceptChannel.configureBlocking(false);
>       // Bind the server socket to the local host and port
>       bind(acceptChannel.socket(), address, backlogLength);
>       port = acceptChannel.socket().getLocalPort(); //Could be an ephemeral port
> {code}
> The problem  seems to be in the line {code}address = new InetSocketAddress(bindAddress, port);{code}.  bindAddress  contains the DNS name of the *internal* interface, but address comes out with the IP address of the *external* interface.



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