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HBase >> mail # user >> multiple masters


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Weishung Chung 2011-01-28, 16:10
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Stack 2011-01-28, 16:35
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Weishung Chung 2011-01-28, 16:52
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Stack 2011-01-28, 16:56
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Re: multiple masters
Great, thank you :D
I guess I need to read up more on zookeeper.

On Fri, Jan 28, 2011 at 10:56 AM, Stack <[EMAIL PROTECTED]> wrote:

> On Fri, Jan 28, 2011 at 8:52 AM, Weishung Chung <[EMAIL PROTECTED]>
> wrote:
> > Correct me if I am wrong :)
> > In HConnectionManager, it seems to me that a zookeeper instance is used
> to
> > get to the HBase master for META and ROOT info. What would happen if
> HBase
> > master became unavailable? Would zookeeper be able to get the ROOT and
> META
> > info from another backup/replicated master? Sorry because I haven't got a
> > chance to browse deeper in the zookeeper codes yet :(
> >
>
> The locations of root is kept in zk and that of meta in the root
> region, not in master.  If master goes away, cluster continues to run.
> St.Ack
>
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Bill Graham 2011-01-28, 21:15
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Stack 2011-01-28, 22:06
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Bill Graham 2011-01-28, 23:29
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Weishung Chung 2011-01-28, 16:18
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB