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From Upayavira ...@odoko.co.uk>
Subject Re: Solr High Availability
Date Wed, 16 Dec 2015 18:01:50 GMT
If you have two replicas (one leader/one replica) for each shard of your
collection, and you ensure that no two replicas are on the same node,
and you have three independent Zookeeper nodes, then yes, you should
have HA.

Upayavira

On Wed, Dec 16, 2015, at 05:48 PM, Peter Tan wrote:
> Hi Jack,
> 
> Appreciate you helping me to clear this up.
> 
> For replicationFactor = 1, that means only keeping one copy of document
> in
> the cluster.
> 
> Currently, for our SolrCloud setup, we have two replicas (primary and
> replica) per each shard (total of 5 shards).  This should achieve the HA
> already, correct?
> 
> 
> 
> On Tue, Dec 15, 2015 at 10:09 PM, Jack Krupansky
> <jack.krupansky@gmail.com>
> wrote:
> 
> > There is no HA with a single replica for each shard. Replication factor
> > must be at least 2 for HA.
> >
> > -- Jack Krupansky
> >
> > On Wed, Dec 16, 2015 at 12:38 AM, Peter Tan <alucarrd@gmail.com> wrote:
> >
> > > Hi Jack, What happens when there is only one replica setup?
> > >
> > > On Tue, Dec 15, 2015 at 9:32 PM, Jack Krupansky <
> > jack.krupansky@gmail.com>
> > > wrote:
> > >
> > > > Solr Cloud provides HA when you configure at least two replicas for
> > each
> > > > shard and have at least 3 zookeepers. That's it. No deck or detail
> > > document
> > > > is needed.
> > > >
> > > >
> > > >
> > > > -- Jack Krupansky
> > > >
> > > > On Tue, Dec 15, 2015 at 9:07 PM, <k.viswanath.bharathi@accenture.com>
> > > > wrote:
> > > >
> > > > > Hi Team,
> > > > >
> > > > > Can you help me in understanding in achieving the Solr High
> > > Availability
> > > > .
> > > > >
> > > > > Appreciate you have a detail document or Deck on more details.
> > > > >
> > > > > Thank you
> > > > > Viswanath Bharathi
> > > > > Accenture | Delivery Centres for Technology in India
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