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https://issues.apache.org/jira/browse/SOLR-12725?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrzej Bialecki updated SOLR-12725:
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Fix Version/s: master (8.0)
> ParseDateFieldUpdateProcessorFactory should reuse ParsePosition
> ---------------------------------------------------------------
>
> Key: SOLR-12725
> URL: https://issues.apache.org/jira/browse/SOLR-12725
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Andrzej Bialecki
> Assignee: Andrzej Bialecki
> Priority: Minor
> Fix For: master (8.0)
>
>
> {{ParseDateFieldUpdateProcessorFactory.parseInstant}} repeatedly calls all
> configured date parsers ({{DateTimeFormatter}}-s) for each incoming date-like
> field. However, it uses {{DateTimeFormatter.parse(dateStr)}} method that
> needs to allocate a throwaway instance of {{ParsePosition}}, instead of
> {{DateTimeFormatter.parse(dateStr, parsePosition)}}.
> Javadocs for this method suggest reusing (and reseting) a single instance of
> {{ParsePosition}} for multiple calls in order to reduce object allocations.
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