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https://issues.apache.org/jira/browse/SOLR-6430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cassandra Targett updated SOLR-6430:
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Component/s: search
> Date sort order for null and dates < 1970 is wrong
> --------------------------------------------------
>
> Key: SOLR-6430
> URL: https://issues.apache.org/jira/browse/SOLR-6430
> Project: Solr
> Issue Type: Bug
> Components: search
> Affects Versions: 4.9
> Reporter: Alexander Block
>
> I have a date field as follows:
> <field name="ETD" type="date" indexed="true" stored="true"
> multiValued="false" />
> ...
> <fieldType name="date" class="solr.TrieDateField" precisionStep="0"
> positionIncrementGap="0"/>
> In my data set I have unset fields (null), dates which are pre EPOCH (e.g.
> 1930-02-13T23:00:00Z) and dates which are post EPOCH (e.g.
> 2000-12-31T23:00:00Z). When sorting in ascending order, I would expect the
> null fields to be considered the ones with the lowest values, for example:
> null
> 1930-02-13T23:00:00Z
> 2000-12-31T23:00:00Z
> What I get however is:
> 1930-02-13T23:00:00Z
> null
> 2000-12-31T23:00:00Z
> It looks like null is not handled as the lowest possible value for a date
> field.
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