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Date: Mon, 11 May 2009 05:33:45 -0700 (PDT)
From: Marc Farrow <marc.farrow@gmail.com>
To: log4j-user@logging.apache.org
Subject: Re: DailyRollingAppender - How does it know when to rollover?
In-Reply-To: <FA34C285-3D49-44C7-B305-A501C187FA09@aconex.com>
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References: <23390773.post@talk.nabble.com>
 <44B76DF56DE7A843BB5E8109DC4EEB1204D5BE7DDE@sbapexch05>
 <23392469.post@talk.nabble.com> <23392539.post@talk.nabble.com>
 <23481523.post@talk.nabble.com>
 <FA34C285-3D49-44C7-B305-A501C187FA09@aconex.com>


I checked the log file for my container (Tomcat) and there were no error
messages that I could see for any rollover messages.  However, I guess I am
going to have to wait til next month to verify.  Since my container is
Tomcat and my container gets restarted fairly often (multiple times a day
because this is a our development server), could this affect the rollover
logic?

Thank you,

Marc 


Paul Smith-2 wrote:
> 
> the first logging event _after_ the time period computed should roll  
> the file over, however if there is any failure (perhaps because  
> another process has the file handle open, a common problem on  
> Windows), the rollover can fail, and you'll need to wait to the next  
> window (another month).
> 
> When the failure occurs, it does log to StdErr (from the source code  
> to DailyRollingFileAppender):
> 
>    protected void subAppend(LoggingEvent event) {
>        long n = System.currentTimeMillis();
>        if (n >= nextCheck) {
>            now.setTime(n);
>            nextCheck = rc.getNextCheckMillis(now);
>            try {
>                rollOver();
>            }
>            catch(IOException ioe) {
>                if (ioe instanceof InterruptedIOException) {
>                    Thread.currentThread().interrupt();
>                }
>                LogLog.error("rollOver() failed.", ioe);
>            }
>        }
>        super.subAppend(event);
>    }
> 
> It tries it's best to continue logging until next roll over period.
> 
> Paul
> 
> On 11/05/2009, at 9:31 PM, Marc Farrow wrote:
> 
>>
>> This is a fairly simple question.  Does anyone that maintains or  
>> create LOG4J
>> read these posts anymore?
>>
>> Thanks.
>>
>> -- 
>> View this message in context:
>> http://www.nabble.com/DailyRollingAppender---How-does-it-know-when-to-rollover--tp23390773p23481523.html
>> Sent from the Log4j - Users mailing list archive at Nabble.com.
>>
>>
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> 
> Paul Smith
> Production Engineering Manager
> 
> Aconex
> The easy way to save time and money on your project
> 
> 696 Bourke Street, Melbourne,
> VIC 3000, Australia
> Tel: +61 3 9240 0200  Fax: +61 3 9240 0299
> Email: psmith@aconex.com  www.aconex.com
> 
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> 
> 
> 
> 
> 

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