logstash/grok-patterns — pull request #1 by wiibaa (2012-08-29 05:18:44+00:00)
Title: Allow single digit hour in HOUR pattern

When working with a single H pattern in hour (from SimpleDateFormat) the hour can be single digit.
"MMM d, yyyy H:mm:ss" gives Aug 28, 2012 8:18:18
but this is not matched by the HOUR and thus TIME grok pattern.
Zero is included in case AM/PM style (K pattern) would be used