ize.
-- Jack Krupansky
-Original Message-
From: Yonik Seeley
Sent: Thursday, December 06, 2012 11:41 PM
To: solr-user@lucene.apache.org
Subject: Re: Minimum HA Setup with SolrCloud
On Thu, Dec 6, 2012 at 8:42 PM, Jack Krupansky
wrote:
And this is precisely why the mystery remains -
On Thu, Dec 6, 2012 at 8:42 PM, Jack Krupansky wrote:
> And this is precisely why the mystery remains - because you're only
> describing half the picture! Describe the rest of the picture - including
> what exactly those two zks can and can't do, including resolution of ties
> and the concept of "
--
From: Jack Krupansky
Sent: Thursday, December 06, 2012 8:39 PM
To: solr-user@lucene.apache.org
Subject: Re: Minimum HA Setup with SolrCloud
And this is precisely why the mystery remains - because you're only
describing half the picture! Describe the rest of the picture - includin
riginal Message-
From: Walter Underwood
Sent: Thursday, December 06, 2012 8:33 PM
To: solr-user@lucene.apache.org
Subject: Re: Minimum HA Setup with SolrCloud
Configure an ensemble of three. When one goes down, you still have an
ensemble of three, but with one down. The ensemble size is not reset
mber 06, 2012 7:51 PM
> To: solr-user@lucene.apache.org
> Subject: Re: Minimum HA Setup with SolrCloud
>
> What is the mystery? Two is not more than half of four. Therefore, two
> machines is not a quorum for a four machine Zookeeper ensemble.
>
> wunder
>
> On Dec 6,
From: Walter Underwood
Sent: Thursday, December 06, 2012 7:51 PM
To: solr-user@lucene.apache.org
Subject: Re: Minimum HA Setup with SolrCloud
What is the mystery? Two is not more than half of four. Therefore, two
machines is not a quorum for a four machine Zookeeper ensemble.
wunder
On Dec 6, 201
Original Message- From: Walter Underwood
> Sent: Thursday, December 06, 2012 7:30 PM
> To: solr-user@lucene.apache.org
> Subject: Re: Minimum HA Setup with SolrCloud
>
> The Zookeeper ensemble knows the total size. It does not adjust it each time
> that a machine is partition
It's still an unresolved mystery, for now.
-- Jack Krupansky
-Original Message-
From: Walter Underwood
Sent: Thursday, December 06, 2012 7:30 PM
To: solr-user@lucene.apache.org
Subject: Re: Minimum HA Setup with SolrCloud
The Zookeeper ensemble knows the total size. It doe
d be fine. I mean whether you start
> with 4 and lose 2 or start with 3 and lose 1 is the same, right?
>
> -- Jack Krupansky
>
> -Original Message- From: Yonik Seeley
> Sent: Thursday, December 06, 2012 6:34 PM
> To: solr-user@lucene.apache.org
> Subject: Re: Minimum H
r you
start with 4 and lose 2 or start with 3 and lose 1 is the same, right?
-- Jack Krupansky
-Original Message-
From: Yonik Seeley
Sent: Thursday, December 06, 2012 6:34 PM
To: solr-user@lucene.apache.org
Subject: Re: Minimum HA Setup with SolrCloud
On Thu, Dec 6, 2012 at 5:55 PM,
On Thu, Dec 6, 2012 at 5:55 PM, Jack Krupansky wrote:
> I trust that you have the right answer, Mark, but maybe I'm just struggling
> to parse this statement: "the remaining two machines do not constitute a
> majority."
>
> If you start with 3 zk and lose one, you have an ensemble that does not
>
On Dec 6, 2012, at 2:55 PM, Jack Krupansky wrote:
> I mean, there must be some hard-core downside, other than that you can't lose
> any more nodes.
Nope, not really. You just can't lose any more nodes.
Technically, you will also lose a bit of read performance - but write
performance generall
From: Mark Miller
Sent: Thursday, December 06, 2012 5:49 PM
To: solr-user@lucene.apache.org
Subject: Re: Minimum HA Setup with SolrCloud
3 is the minimum if you want to allow a node to go down.
1 is the minimum if you want the thing to work at all - but if the 1 goes
down, ZooKeeper may stop
On Dec 6, 2012, at 2:32 PM, Michael Della Bitta
wrote:
> I just rethought what I wrote and it doesn't make any sense. :)
>
> If you have two remaining nodes left when you have a three node ensemble,
> how are ties broken? Or does Zookeeper not resolve ties since it doesn't
> tolerate partition
sky
>
> -Original Message- From: Otis Gospodnetic
> Sent: Thursday, December 06, 2012 4:39 PM
> To: solr-user@lucene.apache.org
> Subject: Re: Minimum HA Setup with SolrCloud
>
> 1 is the minimum :)
> 2 makes no sense.
> 3 must be the most common number i
upansky wrote:
>
>> Slightly more recent link:
>> http://zookeeper.apache.org/**doc/r3.4.5/zookeeperAdmin.html<http://zookeeper.apache.org/doc/r3.4.5/zookeeperAdmin.html>
>>
>> -- Jack Krupansky
>>
>> -----Original Message- From: Jack Krupansky
>> Sent: Thursday,
5/zookeeperAdmin.html<http://zookeeper.apache.org/doc/r3.4.5/zookeeperAdmin.html>
>
> -- Jack Krupansky
>
> -Original Message- From: Jack Krupansky
> Sent: Thursday, December 06, 2012 5:21 PM
>
> To: solr-user@lucene.apache.org
> Subject: Re: Minimum HA Setup
On Thu, Dec 6, 2012 at 5:21 PM, Jack Krupansky wrote:
> If 1 is the minimum, what is the 3 "minimum" all about?
The minimum for running an ensemble (a cluster) and having any sort of
fault tolerance?
> The zk web page does say "Three ZooKeeper servers is the minimum recommended
> size for an ens
y more recent link:
> http://zookeeper.apache.org/doc/r3.4.5/zookeeperAdmin.html
>
> -- Jack Krupansky
>
> -Original Message- From: Jack Krupansky
> Sent: Thursday, December 06, 2012 5:21 PM
> To: solr-user@lucene.apache.org
> Subject: Re: Minimum HA Setup with So
Slightly more recent link:
http://zookeeper.apache.org/doc/r3.4.5/zookeeperAdmin.html
-- Jack Krupansky
-Original Message-
From: Jack Krupansky
Sent: Thursday, December 06, 2012 5:21 PM
To: solr-user@lucene.apache.org
Subject: Re: Minimum HA Setup with SolrCloud
Rewind.
If 1 is the
tic
Sent: Thursday, December 06, 2012 4:39 PM
To: solr-user@lucene.apache.org
Subject: Re: Minimum HA Setup with SolrCloud
1 is the minimum :)
2 makes no sense.
3 must be the most common number in the zoo.
Otis
--
Performance Monitoring - http://sematext.com/spm/index.html
Search Analytic
f
> > zookeepers.
> >
> > -- Jack Krupansky
> >
> > -Original Message- From: Mark Miller
> > Sent: Thursday, December 06, 2012 9:30 AM
> > To: solr-user@lucene.apache.org
> > Subject: Re: Minimum HA Setup with SolrCloud
> >
> >
>
olr-user@lucene.apache.org
> Subject: Re: Minimum HA Setup with SolrCloud
>
>
> It depends on if you are running embedded zk or an external zk ensemble.
>
> One leader and a replica is all you need for Solr to allow on machine to
> go down - but if those same machines are running z
Thanks a lot guys!
On Thu, Dec 6, 2012 at 4:22 PM, Markus Jelsma wrote:
>
> -Original message-
> > From:Yonik Seeley
> > Sent: Thu 06-Dec-2012 16:01
> > To: solr-user@lucene.apache.org
> > Subject: Re: Minimum HA Setup with SolrCloud
> >
> > On
-Original message-
> From:Yonik Seeley
> Sent: Thu 06-Dec-2012 16:01
> To: solr-user@lucene.apache.org
> Subject: Re: Minimum HA Setup with SolrCloud
>
> On Thu, Dec 6, 2012 at 9:56 AM, Markus Jelsma
> wrote:
> > The quorum is the minimun, so it depends on h
On Dec 6, 2012, at 6:54 AM, Yonik Seeley wrote:
> On Thu, Dec 6, 2012 at 9:56 AM, Markus Jelsma
> wrote:
>> The quorum is the minimun, so it depends on how many you have running in the
>> ensemble. If it's three or four, then two is the quorum
>
> I think that for 4 ZK servers, then 3 would b
On Thu, Dec 6, 2012 at 9:56 AM, Markus Jelsma
wrote:
> The quorum is the minimun, so it depends on how many you have running in the
> ensemble. If it's three or four, then two is the quorum
I think that for 4 ZK servers, then 3 would be the quorum?
-Yonik
http://lucidworks.com
> Sent: Thu 06-Dec-2012 15:53
> To: solr-user@lucene.apache.org
> Subject: Re: Minimum HA Setup with SolrCloud
>
> "but if those same machines are running zookeeper, you need 3."
>
> And one of those 3 can go down? I thought 3 was the minimum number o
rg
Subject: Re: Minimum HA Setup with SolrCloud
It depends on if you are running embedded zk or an external zk ensemble.
One leader and a replica is all you need for Solr to allow on machine to go
down - but if those same machines are running zookeeper, you need 3.
You could also run zookee
It depends on if you are running embedded zk or an external zk ensemble.
One leader and a replica is all you need for Solr to allow on machine to go
down - but if those same machines are running zookeeper, you need 3.
You could also run zookeeper on one external machine and then it would be fine
Hey all,
I'm in the process of migrating a single Solr 4.0 instace to a SolrCloud
setup for availability reasons.
After studying the wiki page for SolrCloud I'm not sure what the absolute
minimum setup is that would allow for one machine to go down.
Would it be enough to have one shard with one
31 matches
Mail list logo
