Solrcloud solrconfig.xml

[Michal Krajňanský <mi...@gmail.com>]

Hi Everyone,


I am quite a bit confused about managing configuration files with Zookeeper
for running Solr in cloud mode.

To be precise, I was able to upload the config files (schema.xml,
solrconfig.xml) into the Zookeeper and run Solrcloud.

What confuses me are properties like "data.dir", or replication request
handlers. It seems like these should be different for each of the servers
in the cloud. So how does it work?

(I did google to understand the matter unsuccessfully.)


Best,

Michal

Re: Solrcloud solrconfig.xml

[Michal Krajňanský <mi...@gmail.com>]

Hi Erick,

Thank you for making this clearer (it helped me solve issue with
replication I asked about in different thread). However I suspect I still
do something wrong.

I am running a single Tomcat instance with two instances of Solr.

The shared solrconfig.xml contains:
<dataDir>${solr.data.dir:data}</dataDir>

And the Tomcat contexts set the solr/home as follows:
<Environment name="solr/home" type="java.lang.String"
value=".../solrcloud/solr1" override="true" />
<Environment name="solr/home" type="java.lang.String"
value=".../solrcloud/solr2" override="true" />

The directory structure is as follows:

.../solrcloud/solr1/solr.xml
.../solrcloud/solr1/core1
.../solrcloud/solr1/core1/core.properties
.../solrcloud/solr1/core1/data

.../solrcloud/solr2/solr.xml

After having issued ADDREPLICA on the collection managed by core1, I would
expect to see the new data dir under ".../solrcloud/solr2/core2/data".
However I have seen something like this: (the core names were a little
different).

...

.../solrcloud/solr2/solr.xml
.../solrcloud/solr2/core2
.../solrcloud/solr2/core2/core.properties
.../solrcloud/data    (!)

I.e. the new core data dir was created relative to the parent solrcloud
folder. Makes me confused...

Best,

Michal Krajnansky


2014-11-07 19:59 GMT+01:00 Erick Erickson <er...@gmail.com>:

> Each of those data dirs is relative to the instance in question.
>
> So if you're running on different machines, they're physically
> separate even though named identically.
>
> If you're running multiple nodes on a single machine a-la the
> getting started docs, then each one is in it's own directory
> (e.g. solr/node1, solr/node2) and since the dirs are relative
> to that directory, you get things like
> ..solr/node1/solr/gettingstarted_shard1_replica1/data
> ..solr/node2/solr/gettingstarted_shard1_replica1/data
>
> etc.
>
> Best,
> Erick
>
> On Fri, Nov 7, 2014 at 5:26 AM, Michal Krajňanský
> <mi...@gmail.com> wrote:
> > Hi Everyone,
> >
> >
> > I am quite a bit confused about managing configuration files with
> Zookeeper
> > for running Solr in cloud mode.
> >
> > To be precise, I was able to upload the config files (schema.xml,
> > solrconfig.xml) into the Zookeeper and run Solrcloud.
> >
> > What confuses me are properties like "data.dir", or replication request
> > handlers. It seems like these should be different for each of the servers
> > in the cloud. So how does it work?
> >
> > (I did google to understand the matter unsuccessfully.)
> >
> >
> > Best,
> >
> > Michal
>

Re: Solrcloud solrconfig.xml

[Erick Erickson <er...@gmail.com>]

Each of those data dirs is relative to the instance in question.

So if you're running on different machines, they're physically
separate even though named identically.

If you're running multiple nodes on a single machine a-la the
getting started docs, then each one is in it's own directory
(e.g. solr/node1, solr/node2) and since the dirs are relative
to that directory, you get things like
..solr/node1/solr/gettingstarted_shard1_replica1/data
..solr/node2/solr/gettingstarted_shard1_replica1/data

etc.

Best,
Erick

On Fri, Nov 7, 2014 at 5:26 AM, Michal Krajňanský
<mi...@gmail.com> wrote:
> Hi Everyone,
>
>
> I am quite a bit confused about managing configuration files with Zookeeper
> for running Solr in cloud mode.
>
> To be precise, I was able to upload the config files (schema.xml,
> solrconfig.xml) into the Zookeeper and run Solrcloud.
>
> What confuses me are properties like "data.dir", or replication request
> handlers. It seems like these should be different for each of the servers
> in the cloud. So how does it work?
>
> (I did google to understand the matter unsuccessfully.)
>
>
> Best,
>
> Michal