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https://issues.apache.org/jira/browse/LUCENE-5533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13937677#comment-13937677
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Michael McCandless commented on LUCENE-5533:
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+1
But maybe we should break out a LongTaxonomyFacets instead? Ie, the more
common-case of simple facet counting would never overlow an int since a Lucene
shard can have at most 2.1B docs.
> TaxonomyFacetSumIntAssociations overflows, unpredicted results
> --------------------------------------------------------------
>
> Key: LUCENE-5533
> URL: https://issues.apache.org/jira/browse/LUCENE-5533
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/facet
> Affects Versions: 4.7
> Reporter: Rob Audenaerde
>
> {{TaxonomyFacetSumIntAssociations}} extends {{IntTaxonomyFacets}} which uses
> a {{int[]}} to store values. If you sum a lot of integers in the
> IntAssociatoins, the {{int}} will overflow.
> The easiest fix seems to change the {{value[]}} to {{long}}?
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