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Creating collections in SOLR

On the web searching for collections in SOLR i found only information about distributed search and so on but when I understand the concept of correclty collections are running on the same server instance using the same schema but are logically completely separated. Is this correct? So I can have 3 collections and searching on one collection won´t output results of another right? Would it be possible to search on more than one collection at once?

But my main priority: How do I create a second collection? Even a link to a good doc would be appreciated. In my solr.xml i have

  <cores adminPath="/admin/cores" defaultCoreName="web-collection" host="${host:}" hostPort="${jetty.port:}">
    <core name="web-collection" instanceDir="." />
  </cores>

Would it be sufficient to create a second core-entry and set different paths? like...

  <cores adminPath="/admin/cores" defaultCoreName="web-collection" host="${host:}" hostPort="${jetty.port:}">
    <core name="web-collection" instanceDir="web" />
    <core name="test-collection" instanceDir="test" />
  </cores>

What is the instanceDir about? Is it the index-directory relative to SOLR-Home?

Solution

  • For more information on setting up cores and how they work, please see the Solr Wiki - CoreAdmin for more details and some examples.

    Your example for adding the second core-entry is sufficient.

    The instance directory is the index-directory relative to your SOLR home value.