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

["Jean-Daniel Cryans (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-8640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13750433#comment-13750433 ] 

Jean-Daniel Cryans commented on HBASE-8640:
-------------------------------------------

I wish I caught this jira before.

bq. ServerName in master may not initialize with the configured ipc address of hbase.master.ipc.address

This is by design. Since hbase.master.ipc.address can be 0.0.0.0, you definitely don't want to publish 0.0.0.0 in ZK.
                
> ServerName in master may not initialize with the configured ipc address of hbase.master.ipc.address
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-8640
>                 URL: https://issues.apache.org/jira/browse/HBASE-8640
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>            Reporter: rajeshbabu
>            Assignee: rajeshbabu
>             Fix For: 0.98.0, 0.95.2, 0.94.9
>
>         Attachments: HBASE-8640_94.patch, HBASE-8640.patch
>
>
> We are starting rpc server with default interface hostname or configured ipc address
> {code}
>     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
> {code}
> But we are initialzing servername with default hostname always master znode also have this hostname.
> {code}
>     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());
> {code}
> If both default interface hostname and configured ipc address are not same clients will get MasterNotRunningException.

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