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From "Cheney Sun (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11768) Register region server in zookeeper by ip address
Date Mon, 25 Aug 2014 14:31:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14109147#comment-14109147
] 

Cheney Sun commented on HBASE-11768:
------------------------------------

Jean, Yes, I have run it in a test cluster with some workload for several days. And so far,
so good.

> Register region server in zookeeper by ip address
> -------------------------------------------------
>
>                 Key: HBASE-11768
>                 URL: https://issues.apache.org/jira/browse/HBASE-11768
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 2.0.0
>            Reporter: Cheney Sun
>              Labels: patch
>             Fix For: 2.0.0
>
>         Attachments: HBASE_11768.patch
>
>
> HBase cluster isn't always setup along with a DNS server. But regionservers now register
their hostnames in zookeeper, which bring some inconvenience when regionserver isn't in one
DNS server. In such situation, clients have to maintain the ip/hostname mapping in their /etc/hosts
files in order to resolve the hostname returned from zookeeper to the right address. 
> However, this causes a lot of pain for clients to maintain the mapping, especially when
adding new machines to the cluster, or some machines' address changed due to some reason.
All clients need to update their host mapping files. 
> The issue is to address this problem above, and try to add an option to let each regionserver
record themself by ip address, instead of hostname only.



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