[jira] [Commented] (SOLR-2968) Hunspell very high memory use when loading dictionary

["Mathias H. (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-2968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13804030#comment-13804030 ] 

Mathias H. commented on SOLR-2968:
----------------------------------

I now solved the problem in my special case. I wrote a custom TokenFilterFactory that wraps the DictionaryCompoundWordTokenFilterFactory / HunspellStemFilterFactory and caches the factories, so they will be reused across indexes and fieldtypes.

> Hunspell very high memory use when loading dictionary
> -----------------------------------------------------
>
>                 Key: SOLR-2968
>                 URL: https://issues.apache.org/jira/browse/SOLR-2968
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 3.5
>            Reporter: Maciej Lisiewski
>            Priority: Minor
>         Attachments: patch.txt
>
>
> Hunspell stemmer requires gigantic (for the task) amounts of memory to load dictionary/rules files. 
> For example loading a 4.5 MB polish dictionary (with empty index!) will cause whole core to crash with various out of memory errors unless you set max heap size close to 2GB or more.
> By comparison Stempel using the same dictionary file works just fine with 1/8 of that (and possibly lower values as well).
> Sample error log entries:
> http://pastebin.com/fSrdd5W1
> http://pastebin.com/Lmi0re7Z



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