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https://issues.apache.org/jira/browse/SOLR-2548?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley updated SOLR-2548:
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Attachment: SOLR-2548_multithreaded_faceting,_dsmiley.patch
The attached patch improves on my previous one a little -- a few more comments,
a variable rename for clarity, an assertion. And of course I removed the
future.cancel() loop.
I think this code is pretty clear as far as multithreaded code goes: One loop
that submits tasks, and a follow-on loop that consumes the results of those
tasks, and a semaphore to ensure no more than the desired number of threads are
computing the facets.
It'd be cool to eventually extend multithreading across all the faceting types.
I'll look into that next week.
> Multithreaded faceting
> ----------------------
>
> Key: SOLR-2548
> URL: https://issues.apache.org/jira/browse/SOLR-2548
> Project: Solr
> Issue Type: Improvement
> Components: search
> Affects Versions: 3.1
> Reporter: Janne Majaranta
> Assignee: Erick Erickson
> Priority: Minor
> Labels: facet
> Fix For: 4.5, 5.0
>
> Attachments: SOLR-2548_4.2.1.patch, SOLR-2548_for_31x.patch,
> SOLR-2548_multithreaded_faceting,_dsmiley.patch,
> SOLR-2548_multithreaded_faceting,_dsmiley.patch, SOLR-2548.patch,
> SOLR-2548.patch, SOLR-2548.patch, SOLR-2548.patch, SOLR-2548.patch,
> SOLR-2548.patch
>
>
> Add multithreading support for faceting.
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