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https://issues.apache.org/jira/browse/TIKA-4427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17955284#comment-17955284
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Tim Allison commented on TIKA-4427:
-----------------------------------
Git diff on XMLReaderUtils shows only trivial differences between at least
2.9.4 and 3.x.
> Memory Leak when parsing a large (110K+) number of documents
> --------------------------------------------------------------
>
> Key: TIKA-4427
> URL: https://issues.apache.org/jira/browse/TIKA-4427
> Project: Tika
> Issue Type: Bug
> Components: core
> Affects Versions: 3.2.0
> Reporter: Tim Barrett
> Priority: Major
> Attachments: Screenshot 2025-05-30 at 17.22.38.png, Screenshot
> 2025-05-30 at 18.31.01.png, Screenshot 2025-05-30 at 18.31.47.png
>
>
> When parsing a very large number of documents, which include a lot of eml
> files we see that
> The static field XMLReaderUtils.SAX_PARSERS is holding a massive amount of
> memory: 3.28 GB. This is a static pool of cached SAXParser instances, each of
> which is holding onto substantial amounts of memory, apparently in the
> fDocumentHandler field.
> This is a big data test we run regularly, the memory issues did not occur in
> Tika version 2.x
>
> I have attached JVM monitor screenshots.
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