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From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5353) HA/Distributed HMaster via RegionServers
Date Wed, 08 Feb 2012 21:54:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13204036#comment-13204036
] 

Todd Lipcon commented on HBASE-5353:
------------------------------------

Given that we already have failover support for the master, I'm skeptical that adding any
complexity here is a good idea. If you want to colocate masters and RS, you can simply run
a master process on a few of your RS nodes, and basically have the same behavior.

What's the compelling use case? The master is _not_ a SPOF since we already have hot failover
support.
                
> HA/Distributed HMaster via RegionServers
> ----------------------------------------
>
>                 Key: HBASE-5353
>                 URL: https://issues.apache.org/jira/browse/HBASE-5353
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, regionserver
>    Affects Versions: 0.94.0
>            Reporter: Jesse Yates
>            Priority: Minor
>
> Currently, the HMaster node must be considered a 'special' node (single point of failure),
meaning that the node must be protected more than the other commodity machines. It should
be possible to instead have the HMaster be much more available, either in a distributed sense
(meaning a bit rewrite) or with multiple instances and automatic failover. 

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