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https://issues.apache.org/jira/browse/SOLR-8420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anshum Gupta resolved SOLR-8420.
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Resolution: Fixed
> Date statistics: sumOfSquares overflows long
> --------------------------------------------
>
> Key: SOLR-8420
> URL: https://issues.apache.org/jira/browse/SOLR-8420
> Project: Solr
> Issue Type: Bug
> Components: SearchComponents - other
> Affects Versions: 5.4
> Reporter: Tom Hill
> Assignee: Tomás Fernández Löbbe
> Priority: Minor
> Fix For: master, 6.0, 5.5.1
>
> Attachments: 0001-Fix-overflow-in-date-statistics.patch,
> 0001-Fix-overflow-in-date-statistics.patch,
> 0001-Fix-overflow-in-date-statistics.patch, SOLR-8420.patch, StdDev.java
>
>
> The values for Dates are large enough that squaring them overflows a "long"
> field. This should be converted to a double.
> StatsValuesFactory.java, line 755 DateStatsValues#updateTypeSpecificStats Add
> a cast to double
> sumOfSquares += ( (double)value * value * count);
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