[HBASE-8640] ServerName in master may not initialize with the configured ipc address of hbase.master.ipc.address

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.98.0, 0.95.2, 0.94.9
• Component/s: master
• Hadoop Flags: Reviewed
• Assignee: rajeshbabu
• Reporter: rajeshbabu
• Created: 29/May/13 11:43
• Updated: 29/Aug/13 13:07
• Resolved: 03/Jun/13 03:52

Description

We are starting rpc server with default interface hostname or configured ipc address

    this.rpcServer = HBaseRPC.getServer(this,
      new Class<?>[]{HMasterInterface.class, HMasterRegionInterface.class},
        initialIsa.getHostName(), // This is bindAddress if set else it's hostname
        initialIsa.getPort(),
        numHandlers,
        0, // we dont use high priority handlers in master
        conf.getBoolean("hbase.rpc.verbose", false), conf,
        0); // this is a DNC w/o high priority handlers

But we are initialzing servername with default hostname always master znode also have this hostname.

    String hostname = Strings.domainNamePointerToHostName(DNS.getDefaultHost(
      conf.get("hbase.master.dns.interface", "default"),
      conf.get("hbase.master.dns.nameserver", "default")));
	...
    this.serverName = new ServerName(hostname,
      this.isa.getPort(), System.currentTimeMillis());

If both default interface hostname and configured ipc address are not same clients will get MasterNotRunningException.