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https://issues.apache.org/jira/browse/SOLR-3443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13269573#comment-13269573
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Luca Cavanna commented on SOLR-3443:
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The first thing I have in mind is a static map containing all loaded
dictionaries with some kind of unique identifier, so that the same dictionary
can be reused between cores.
But my question is: is there a mechanism to share object between cores in Solr?
Is this the first time someone needs to share something between multiple cores?
I'd like to hear your thoughts!
> Optimize hunspell dictionary loading with multiple cores
> --------------------------------------------------------
>
> Key: SOLR-3443
> URL: https://issues.apache.org/jira/browse/SOLR-3443
> Project: Solr
> Issue Type: Improvement
> Reporter: Luca Cavanna
>
> The Hunspell dictionary is actually loaded into memory. Each core using
> hunspell loads its own dictionary, no matter if all the cores are using the
> same dictionary files. As a result, the same dictionary is loaded into memory
> multiple times, once for each core. I think we should share those
> dictionaries between all cores in order to optimize the memory usage. In
> fact, let's say a dictionary takes 20MB into memory (this is what I
> detected), if you have 20 cores you are going to use 400MB only for
> dictionaries, which doesn't seem a good idea to me.
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