[jira] [Created] (SOLR-12725) ParseDateFieldUpdateProcessorFactory should reuse ParsePosition

["Andrzej Bialecki (JIRA)" <ji...@apache.org>]

Andrzej Bialecki  created SOLR-12725:
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             Summary: 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 


{{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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