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https://issues.apache.org/jira/browse/SOLR-2548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13039883#comment-13039883
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Janne Majaranta commented on SOLR-2548:
---------------------------------------
The attached patch adds initial multithreading support for faceting. The patch
simply wraps the facet counting methods per field into
java.util.concurrent.Callable instances and executes these with a
ExecutorService having a threadpool-size equal to the number of processors
reported by the runtime.
Seems like this adds quite nice speed boosts when faceting over multiple
fields. In initial tests (with a patched SOLR 3.1 instance) the faceting speed
was about 2x-8x faster with both faceting methods, enum and fc.
> 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
> Priority: Minor
> Labels: facet
> Attachments: SOLR-2548.patch, SOLR-2548_for_31x.patch
>
>
> Add multithreading support for faceting.
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