[jira] [Commented] (TIKA-2693) Tika 1.17 uses the wrong classloader for reflection

["Karl Wright (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TIKA-2693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16573198#comment-16573198 ] 

Karl Wright commented on TIKA-2693:
-----------------------------------

I am being clobbered with Tika/POI issues at the moment so I'm going to recommend holding off shipping MCF 2.11 until we either have a 1.19 Tika, or we know we're not going to get it soon.  Hopefully that helps. ;-)

> Tika 1.17 uses the wrong classloader for reflection
> ---------------------------------------------------
>
>                 Key: TIKA-2693
>                 URL: https://issues.apache.org/jira/browse/TIKA-2693
>             Project: Tika
>          Issue Type: Bug
>          Components: general
>    Affects Versions: 1.17
>            Reporter: Karl Wright
>            Priority: Major
>
> I don't know whether this was addressed in 1.18, but Tika seemingly uses the wrong classloader when loading some classes by reflection.
> In ManifoldCF, there's a two-tiered classloader hierarchy.  Tika runs in the higher class level.  Its expectation is that classes that are loaded via reflection use the classloader associated with the class that is resolving the reflection, NOT the thread classloader.  That's standard Java practice.
> But apparently there's a place where Tika doesn't do it that way:
> {code}
> Error tossed: org/apache/poi/POIXMLTextExtractor
> java.lang.NoClassDefFoundError: org/apache/poi/POIXMLTextExtractor
>         at org.apache.tika.parser.microsoft.ooxml.OOXMLParser.parse(OOXMLParser.java:106) ~[?:?]
>         at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280) ~[?:?]
>         at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280) ~[?:?]
>         at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:143) ~[?:?]
>         at org.apache.manifoldcf.agents.transformation.tika.TikaParser.parse(TikaParser.java:74) ~[?:?]
> {code}



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