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https://issues.apache.org/jira/browse/SOLR-3443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13269607#comment-13269607
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Chris Male commented on SOLR-3443:
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Good suggestion Luca, this is a good way to save some memory. With LUCENE-2510
I'm going to move all the analysis factories into the analysis module so we
will need a way that we can share across multiple Factory instances, not just
Solr cores.
> 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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