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https://issues.apache.org/jira/browse/SOLR-12789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16623756#comment-16623756
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Alexandre Rafalovitch commented on SOLR-12789:
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Hi Aaron,

It is great to hear that there would be a healthy discussion about this. Please 
feel free to share the outcome of this on the developer list and it may spark 
further developers discussion too. Nothing is set in stone, given enough 
evidence to the contrary.

Still, just to re-summarize, the issue we were facing was that all the shipped 
examples were dead (Alchemy API...) and over multiple issues we could not 
figure out a way to get to the new local maximum of latest version and useful 
examples (UIMA has a bit of a learning curve). Nor were we able to find anybody 
helping us to push the discussion forward within either development community 
(Jira discussions) or the user community (Solr Users mailing list).

Additionally, we are trying to slim Solr down in general and have done several 
things towards that, including removing Javadoc from the distribution. If you 
were more closely connected to the community, you would see multiple of these 
drives all pointing in the same general direction. So, having a dead weight we 
could not figure what to do with over several years was very much "not cool" on 
all those users downloading Solr and trying to navigate their way through very 
full-featured product. 

And then, of course, there is a fact that we now incorporate Apache OpenNLP as 
well. So, there are trade-offs to keep in mind.

 

> UIMA enhancements to allow for dynamic AE detection
> ---------------------------------------------------
>
>                 Key: SOLR-12789
>                 URL: https://issues.apache.org/jira/browse/SOLR-12789
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: contrib - UIMA
>    Affects Versions: 6.0
>            Reporter: Aaron LaBella
>            Priority: Major
>              Labels: ready-to-commit
>         Attachments: SOLR-12789-1.patch, SOLR-12789-2.patch, 
> SOLR-12789-3.patch
>
>
> I've been sitting on this patch for over 2 years (and likewise it's been 
> running IN production for the same) ... finally got around to contributing it 
> back to the community.  This change prepares the UIMAUpdateRequestProcessor 
> to allow subclasses to have additional control over how the analysis engine 
> is selected.  In my case, I wrote a sub-class that allows for *dynamic* 
> detection of the UIMA analysis engine based on the document fields.  ie: a 
> field in the document can be used to select different UIMA configurations and 
> rules.
>  
> Can someone please commit this as soon as possible.  I don't necessarily need 
> it to be back-ported, having in 7.4.1 would suffice.
> Thanks!



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