phoenix-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jesse Yates <>
Subject Re: Phoenix Query Server Placement
Date Sat, 05 Dec 2015 16:22:10 GMT
I think he means its not a terribly expensive process - it is basically
just a fancy query proxy. If you are running a cluster any larger than 3
nodes you should seriously consider running at least a second or third
HMaster. When they are in standby mode they don't do very much - just watch
ZK for the leader lock. When active they very very rarely impact the path
of the client and you should be able to pretty easily ride over a hmaster
failover event.

However, given that it is a pretty new component, I would personally be
cautious putting it on nodes that affect the entire cluster health, like
the servers hosting ZK or the NN.

Just my $0.02

On Sat, Dec 5, 2015 at 4:20 AM Andreas Fritzler <>

> Thanks Thomas. Yes, that's the one.
> What exactly do you mean by "heavy"? I was wondering if it would make
> sense to put it on the same host as the HBase master. On the other side I
> don't want the query server bring down the master machine ...
> On Fri, Dec 4, 2015 at 4:56 PM, Thomas Decaux <> wrote:
>> You mean
>> I am not sure it's really heavy, so I would suggest to run it closest
>> from HBase server.
>> 2015-12-04 15:59 GMT+01:00 Andreas Fritzler <>:
>>> Hi,
>>> What is the best place to install the Phoenix Query Server within an HDP
>>> Hadoop cluster? Is it a good idea to place it on one of the master
>>> machines? Or would your rather suggest to have a dedicated host for that?
>>> Also any suggestion/best practices on how to load balance multiple
>>> instances of the query server?
>>> Thanks a lot in advance!
>>> Regards,
>>> Andreas

View raw message