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From jesse <chat2je...@gmail.com>
Subject Re: Phoenix with multiple HBase masters
Date Wed, 07 Aug 2019 18:14:14 GMT
Thank you all, very helpful information.

1) for server side ELB, what is the PQS health check url path?

2) Does Phoenix client library support client-side load-balancing? i. e
client gets list of PQS addresses from ZK, and performs load balancing.
Thus ELB won't be needed.



On Wed, Aug 7, 2019, 9:01 AM Josh Elser <elserj@apache.org> wrote:

> Great answer, Aleksandr!
>
> Also worth mentioning there is only ever one active HBase Master at a
> time. If you have multiple started, one will be active as the master and
> the rest will be waiting as a standby in case the current active master
> dies for some reason (expectedly or unexpectedly).
>
> On 8/7/19 9:55 AM, Aleksandr Saraseka wrote:
> > Hello.
> > - Phoenix libs should be installed only on RegionServers.
> > - QueryServer - it's up to you, PQS can be installed anywhere you want
> > - No. QueryServer is using ZK quorum to get everything it needs
> > - If you need to balance traffic with multiply PQSs - then yes, but
> > again - it's up to you. It is not required multiply PQSs if you have
> > multiply HBase masters.
> >
> > On Wed, Aug 7, 2019 at 12:58 AM jesse <chat2jesse@gmail.com
> > <mailto:chat2jesse@gmail.com>> wrote:
> >
> >     Our cluster used to have one hbase master, now a secondary is added.
> >     For phonenix, what changes should we make?
> >       - do we have to install new hbase libraries on the new hbase
> >     master node?
> >     - do we need to install new query server on the hbase master?
> >     - any configuration changes should we make?
> >     - do we need an ELB for the query server?
> >
> >     Thanks
> >
> >
> >
> >
> >
> > --
> >               Aleksandr Saraseka
> > DBA
> > 380997600401
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