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