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From bugzi...@apache.org
Subject [Bug 54044] New: AccessLogValve using stale date/time with SimpleDateFormat
Date Tue, 23 Oct 2012 15:38:56 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=54044

          Priority: P2
            Bug ID: 54044
          Assignee: dev@tomcat.apache.org
           Summary: AccessLogValve using stale date/time with
                    SimpleDateFormat
          Severity: normal
    Classification: Unclassified
                OS: Solaris
          Reporter: clucas@e-miles.com
          Hardware: Sun
            Status: NEW
           Version: 7.0.30
         Component: Catalina
           Product: Tomcat 7

We are noticing old/stale date/times in out access logs. I copied (and
scrubbed) the entries below from an access log from 2012-10-22.

...,2012-10-15 18:00:56.705-0500,"GET ...
...,2012-10-22 10:29:01.801-0500,"GET ...
...,2012-10-22 10:29:01.802-0500,"GET ...
...,2012-10-22 10:29:01.803-0500,"GET ...
...,2012-10-22 10:29:01.804-0500,"GET ...
...,2012-10-15 18:00:56.804-0500,"GET ...
...,2012-10-15 18:00:56.857-0500,"GET ...

We use using the SimpleDateFormat functionality and the beginTime prefix.  Our
"pattern" is:

%{X-Tomcat-Session}i,%S,%{X-Forwarded-For}i,%h,%u,%{begin:yyyy-MM-dd
HH:mm:ss.SSSZ}t,"%r",%s,%b,%p,%{Referer}i,"%{User-Agent}i",%T"

In the example above, jvm/tomcat instance was started on 2012-10-15 at 18:00:41
(a few seconds before the stuck time in the access log) so the  2012-10-15
18:00:56 times are likely related to some caching issues/problems.  We also
occasionally see other log entries with incorrect (but not startup)
dates/times.  For, example, we sometimes see yesterday's date in the access
log.

Also, note that the millisecond times do appear to be correct in that they
increase in a reasonable way and are unrelated to the date and second-truncated
time.

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