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List:       log4j-user
Subject:    Re: Question about using org.apache.log4j.rolling.RollingFileAppender
From:       Simon Park <simon_park_mail () yahoo ! co ! uk>
Date:       2010-04-02 8:00:38
Message-ID: 245098.68751.qm () web26306 ! mail ! ukl ! yahoo ! com
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The TimeAndSizeRollingApender doesn't bother renaming the list of backup files and so \
doesn't have this restriction.  It's freely available under the same Apache 2.0 \
license as Log4J at www.simonsite.org.uk.




________________________________
From: Doal Miller <Doal.Miller@mir3.com>
To: Log4J Users List <log4j-user@logging.apache.org>
Sent: Tue, 16 March, 2010 16:05:44
Subject: RE: Question about using org.apache.log4j.rolling.RollingFileAppender

Thanks for the reply. I can probably get away with using TimeBasedRollingPolicy. If \
not maybe I'll look into the work you proposed. Thanks.

Doal Miller
Sr. Software Engineer



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-----Original Message-----
From: Curt Arnold [mailto:curt.arnld@gmail.com] On Behalf Of Curt Arnold
Sent: Monday, March 15, 2010 8:27 PM
To: Log4J Users List
Subject: Re: Question about using org.apache.log4j.rolling.RollingFileAppender


On Mar 15, 2010, at 6:48 PM, Doal Miller wrote:

> I've been playing around with the RollingFileAppender out of the extra jar and I've \
> gotten it working in a couple of different ways but I'm not getting exactly what I \
> want. 
> What I want is to roll a file when the maximum size is reached and to keep a large \
> number of files around, like around 250. With my following configuration file it \
> rolls at 10,000 bytes but the FixedWindowRollingPolicy doesn't allow me to keep \
> over 12 files. If I try to set MaxIndex higher than 12 it complains and resets it. \
> I tried using the TimeBasedRollingPolicy instead, in conjunction with \
> SizeBasedTriggeringPolicy but I guess TimeBasedRollingPolicy uses its own \
> triggering policy. 
> Is there a way to set the max number of files for the FixedWindowRollingPolicy to \
> 250 without cracking open the code? 
> Thanks in advance for any suggestions.
> 
The limit on maximum files was added since things get very slow if you rename 250 \
files one at a time (delete .250, rename .249 to .250, rename .248 to .249, etc).

Renaming log files is inherently risky and platform dependent.  Writing an RFA \
alternative using java.nio and avoiding renames has been on my to-do list for a long \
                time.
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