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From JesseBuesking <jessebuesk...@gmail.com>
Subject Cloud terminology clarification
Date Sun, 09 Sep 2012 05:26:13 GMT
It's been a while since the terminology at
http://wiki.apache.org/solr/SolrTerminology has been updated, so I'm
wondering how these terms apply to solr cloud setups.

My take on what the terms mean:

Collection: Basically the highest level container that bundles together the
other pieces for servicing a particular search setup
Core: An individual solr instance (represents entire indexes)
Shard: A portion of a core (represents a subset of an index)

Therefore:
- increasing the number of shards allows for indexing more documents (aka
scaling the amount of data that can be indexed)
- increasing the number of cores increases the potential throughput of
requests (aka cores mirror each other allowing you to distribute requests to
multiple servers)

Does this sound right?

If so, then my follow up question would be does the following directory
structure look right/standard?

.../solr # = solr home
.../solr/collection-01
.../solr/collection-01/core-01
.../solr/collection-01/core-02

And if this is right, I'm on a roll :D

My next question would then be:
Given we're using zookeeper (separate machine), do we need 1 conf folder at
collection-01's level?  Or do we need 1 conf folder per core?



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