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HBase >> mail # user >> Rolling Restart and Load Balancer.


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Jean-Marc Spaggiari 2013-04-17, 20:15
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Ted Yu 2013-04-17, 20:18
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Re: Rolling Restart and Load Balancer.
I have opened HBASE-8373 for that and uploaded the modification.

Thanks,

JM

2013/4/17 Ted Yu <[EMAIL PROTECTED]>

> We should make the documentation match the script.
>
> Thanks
>
> On Apr 17, 2013, at 1:15 PM, Jean-Marc Spaggiari <[EMAIL PROTECTED]>
> wrote:
>
> > When we are doing rolling restarts, the load balancer is automatically
> > turned off.
> >
> > hbase@node3:~/hbase$ ./bin/graceful_stop.sh --restart --reload --debug
> buldo
> > Disabling balancer!
> > HBase Shell; enter 'help<RETURN>' for list of supported commands.
> > Type "exit<RETURN>" to leave the HBase Shell
> > Version 0.94.6.1, r1464658, Thu Apr  4 10:58:50 PDT 2013
> >
> > balance_switch false
> > false
> >
> > 0 row(s) in 0.4110 seconds
> > .
> > .
> > .
> >
> >
> > However, in the documentation, we still recommand to turn it of manually
> > before doing the rolling restart:
> http://hbase.apache.org/book.html#rolling
> >
> > Should the documentation be updated to reflect that it's not required
> > anymore to turn off the load balancer since it will be done by the
> script?
> >
> > JM
>
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