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https://issues.apache.org/jira/browse/CONNECTORS-1453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16175983#comment-16175983
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Karl Wright commented on CONNECTORS-1453:
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Actually, the fix is apparently in 3.17, which is now available.
> Implement POI's suggested workaround for their classloader issue
> ----------------------------------------------------------------
>
> Key: CONNECTORS-1453
> URL: https://issues.apache.org/jira/browse/CONNECTORS-1453
> Project: ManifoldCF
> Issue Type: Bug
> Components: Tika extractor
> Reporter: Karl Wright
> Assignee: Karl Wright
> Fix For: ManifoldCF 2.9
>
>
> The Apache POI folks do not want to change their classloader setup,
> unfortunately. But they have provided a hook for overriding the class loader
> in 3.16 and up here:
> {code}
> org.apache.poi.POIXMLTypeLoader.setClassLoader(ClassLoader cl)
> {code}
> This sets the classloader into a ThreadLocal. So there would be a rather
> clunky workaround that would have the TikaExtractor set the POI class loader
> before all tika-parser requests.
> It only makes sense to do this if there is no plan to solve this for real.
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