[jboss-jira] [JBoss JIRA] Resolved: (JBCACHE-817) Remove all calls to InetAddress.getHostName() (causes reverse DNS lookup)

Brian Stansberry (JIRA) jira-events at jboss.com
Fri Oct 27 11:24:41 EDT 2006


     [ http://jira.jboss.com/jira/browse/JBCACHE-817?page=all ]

Brian Stansberry resolved JBCACHE-817.
--------------------------------------

    Resolution: Rejected

Rejected solely because ClusterNode is not used in JBoss Cache.  Please re-open under the JBoss Application Server project, Cluster module and I'll have a look.

> Remove all calls to InetAddress.getHostName() (causes reverse DNS lookup)
> -------------------------------------------------------------------------
>
>                 Key: JBCACHE-817
>                 URL: http://jira.jboss.com/jira/browse/JBCACHE-817
>             Project: JBoss Cache
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Clustering
>         Environment: JBoss 4.0.4
>            Reporter: Michael Newcomb
>         Assigned To: Manik Surtani
>            Priority: Minor
>
> Any call to InetAddress.getHostName() will cause a reverse DNS lookup. If DNS is not configured, can cause slow startup/join times between JBoss clusters.
> The most notable is in ClusterNode.java:
> public ClusterNode(IpAddress jgAddress)
> {
>    if (jgAddress.getAdditionalData() == null)
>    {
>       this.id = jgAddress.getIpAddress().getHostAddress() + ":" + jgAddress.getPort();
>    }
>    else
>    {
>       this.id = new String(jgAddress.getAdditionalData());
>    }
>    this.originalJGAddress = jgAddress;
>    StringBuffer sb = new StringBuffer();
>    java.net.InetAddress jgIPAddr = jgAddress.getIpAddress();
>    if (jgIPAddr == null)
>       sb.append("<null>");
>    else
>    {
>       if (jgIPAddr.isMulticastAddress())
>          sb.append(jgIPAddr.getHostAddress());
>       else
> ----->>>>      sb.append(getShortName(jgIPAddr.getHostName()));
>    }
>    sb.append(":" + jgAddress.getPort());
>    this.jgId = sb.toString();
> }
> The following:
> if (jgIPAddr.isMulticastAddress())
>    sb.append(jgIPAddr.getHostAddress());
> else
>    sb.append(getShortName(jgIPAddr.getHostName()));
> should be replaced with:
> sb.append(jgIPAddr.getHostAddress());
> I am currently trying to configure our machine for reverse DNS lookup to see if that at least solves the slow lookup problem.

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