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Posted to dev@lucene.apache.org by "Steve Rowe (JIRA)" <ji...@apache.org> on 2013/01/15 21:32:14 UTC
[jira] [Updated] (SOLR-1293) Support for large no:of cores and
faster loading/unloading of cores
[ https://issues.apache.org/jira/browse/SOLR-1293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Rowe updated SOLR-1293:
-----------------------------
Fix Version/s: (was: 4.1)
4.2
> Support for large no:of cores and faster loading/unloading of cores
> -------------------------------------------------------------------
>
> Key: SOLR-1293
> URL: https://issues.apache.org/jira/browse/SOLR-1293
> Project: Solr
> Issue Type: New Feature
> Components: multicore
> Reporter: Noble Paul
> Assignee: Erick Erickson
> Fix For: 4.2
>
> Attachments: SOLR-1293.patch
>
>
> Solr , currently ,is not very suitable for a large no:of homogeneous cores where you require fast/frequent loading/unloading of cores . usually a core is required to be loaded just to fire a search query or to just index one document
> The requirements of such a system are.
> * Very efficient loading of cores . Solr cannot afford to read and parse and create Schema, SolrConfig Objects for each core each time the core has to be loaded ( SOLR-919 , SOLR-920)
> * START STOP core . Currently it is only possible to unload a core (SOLR-880)
> * Automatic loading of cores . If a core is present and it is not loaded and a request comes for that load it automatically before serving up a request
> * As there are a large no:of cores , all the cores cannot be kept loaded always. There has to be an upper limit beyond which we need to unload a few cores (probably the least recently used ones)
> * Automatic allotment of dataDir for cores. If the no:of cores is too high al the cores' dataDirs cannot live in the same dir. There is an upper limit on the no:of dirs you can create in a unix dir w/o affecting performance
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