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https://issues.apache.org/jira/browse/LUCENE-4764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shai Erera updated LUCENE-4764:
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Attachment: LUCENE-4764.patch
Patch handles some nocommits. Now Facet42Codec takes a FacetIndexingParams and
builds a HashSet over the fields returned by fip.getAllCLPs(), and uses it in
getDVFForField.
Also, this codec cannot support facet partitions, since the number of
partitions is unknown in advance (each partition corresponds to a field). So I
throw an IllegalArgEx.
I renamed the package to o.a.l.facet.codecs.facet42 and moved everything under
it. Facet42Codec and Facet42DVF are the only public classes.
I also added a resources folder which declares the new DVF.
Made FacetTestCase randomly select the new codec (30% of the times), all tests
pass. Note though that only tests that use the default FacetIndexingParams
actually test the new format.
There are still few nocommits. I ran 'documetnation-lint' and it was happy.
> Faster but more RAM/Disk consuming DocValuesFormat for facets
> -------------------------------------------------------------
>
> Key: LUCENE-4764
> URL: https://issues.apache.org/jira/browse/LUCENE-4764
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 4.2, 5.0
>
> Attachments: LUCENE-4764.patch, LUCENE-4764.patch
>
>
> The new default DV format for binary fields has much more
> RAM-efficient encoding of the address for each document ... but it's
> also a bit slower at decode time, which affects facets because we
> decode for every collected docID.
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