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https://issues.apache.org/jira/browse/LUCENE-9969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17402212#comment-17402212
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Greg Miller commented on LUCENE-9969:
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[~chengfengfeng] did you see [~gworah]'s suggestions above to try running a
newer version of Lucene (8.8 or higher) or reduce the cardinality of your
unique taxonomy values in some way? Were you able to find a path forward for
your use-case? Can you provide any more information that might be helpful in
understanding how you're using faceting? Thanks!
> DirectoryTaxonomyReader.taxoArray占用内存较大导致系统OOM宕机
> ------------------------------------------------
>
> Key: LUCENE-9969
> URL: https://issues.apache.org/jira/browse/LUCENE-9969
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/facet
> Affects Versions: 6.6.2
> Reporter: FengFeng Cheng
> Priority: Trivial
> Attachments: image-2021-05-24-13-43-43-289.png
>
>
> 首先数据量很大，jvm内存为90G，但是TaxonomyIndexArrays几乎占走了一半
> !image-2021-05-24-13-43-43-289.png!
> 请问对于TaxonomyReader是否有更好的使用方式或者其他的优化？
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