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From "Jonathan Hsieh (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5353) HA/Distributed HMaster via RegionServers
Date Thu, 08 Mar 2012 08:04:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13225079#comment-13225079
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Jonathan Hsieh commented on HBASE-5353:
---------------------------------------

@Todd @Nicholas A months back I've started some work on HBASE-5083 but never haven't posted
the patch yet since it has a pretty nasty hack in it (adding 10 to the master port to get
the info/http port).   There has been some cluster status things changing recently -- I'll
wait for that to settle before I finish that patch.
                
> 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(s) must be considered a 'special' node (though not a single
point of failover), meaning that the node must be protected more than the other cluster machines
or at least specially monitored. Minimally, we always need to ensure that the master is running,
rather than letting the system handle that internally. It should be possible to instead have
the HMaster be much more available, either in a distributed sense (meaning a bit rewrite)
or multiple, dynamically created instances combined with the hot fail-over of masters. 

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