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https://issues.apache.org/jira/browse/SOLR-9085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley resolved SOLR-9085.
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Resolution: Fixed
> DateRangeField is broken before the year 1582
> ---------------------------------------------
>
> Key: SOLR-9085
> URL: https://issues.apache.org/jira/browse/SOLR-9085
> Project: Solr
> Issue Type: Bug
> Affects Versions: 6.0
> Reporter: David Smiley
> Assignee: David Smiley
> Fix For: 6.1
>
> Attachments: SOLR-9085.patch
>
>
> DateRangeField has some issues for dates before 1582 (the Gregorian Change
> Date), following Solr 6. The main problem is that it uses DateMathParser
> which no longer observes a GCD and then it converts that Date to a Calendar
> using Calendar.setTime(date) which considers the GCD. We can't altogether
> avoid Calendar.java as in SOLR-9080 because DateRangePrefixTree currently
> fundamentally depends on it. However I recently learned we can simply change
> the GCD like so: {{cal.setGregorianChange(new Date(Long.MIN_VALUE));}}
> beforehand. DateRangeField also calls Calendar.getTime as well, which is
> affected by GCD considerations.
> For users that use DateRangeField but do *not* use "Date Math" and do not
> have 'Z' in their date strings then date strings are completely parsed by
> DateRangePrefixTree and there should be no issue.
> DateRangePrefixTree ought to be improved a bit too (in a separate issue)...
> like making the GCD configurable, and setting using
> SimpleDateFormatter.setCalendar it uses to format.
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