Doh! Sorry - this was broken - I need to fix the doc or add it back.
The shard id is actually set in solr.xml since its per core - the sys prop
was a sugar option we had setup. So either add 'shard' to the core in
solr.xml, or to make it work like it does in the doc, do:
<core name="collection1" shard="${shard:}" instanceDir="." />
That sets shard to the 'shard' system property if its set, or as a default,
act as if it wasn't set.
I've been working with custom shard ids mainly through solrj, so I hadn't
noticed this.
- Mark
On Wed, Feb 29, 2012 at 10:36 AM, Ranjan Bagchi <ranjan.bag...@gmail.com>wrote:
> Hi,
>
> At this point I'm ok with one zk instance being a point of failure, I just
> want to create sharded solr instances, bring them into the cluster, and be
> able to shut them down without bringing down the whole cluster.
>
> According to the wiki page, I should be able to bring up new shard by using
> shardId [-D shardId], but when I did that, the logs showed it replicating
> an existing shard.
>
> Ranjan
> Andre Bois-Crettez wrote:
>
> > You have to run ZK on a at least 3 different machines for fault
> > tolerance (a ZK ensemble).
> >
> >
> http://wiki.apache.org/solr/SolrCloud#Example_C:_Two_shard_cluster_with_sha=
> > rd_replicas_and_zookeeper_ensemble
> >
> > Ranjan Bagchi wrote:
> > > Hi,
> > >
> > > I'm interested in setting up a solr cluster where each machine [at
> least
> > > initially] hosts a separate shard of a big index [too big to sit on the
> > > machine]. I'm able to put a cloud together by telling it that I have
> (to
> > > start out with) 4 nodes, and then starting up nodes on 3 machines
> > pointin=
> > g
> > > at the zkInstance. I'm able to load my sharded data onto each machine
> > > individually and it seems to work.
> > >
> > > My concern is that it's not fault tolerant: if one of the
> non-zookeeper
> > > machines falls over, the whole cluster won't work. Also, I can't
> create
> > =
> > a
> > > shard with more data, and have it work within the existing cloud.
> > >
> > > I tried using -DshardId=3Dshard5 [on an existing 4-shard cluster], but
> it
> > > just started replicating, which doesn't seem right.
> > >
> > > Are there ways around this?
> > >
> > > Thanks,
> > > Ranjan Bagchi
> > >
> > >
>
--
- Mark
http://www.lucidimagination.com
