On Jun 5, 2008, at 1:23 PM, Stephen Bartnikowski wrote:
I've been doing that for two years with no issue. It was my
understanding that this was one of the major features of log4cxx,
but I could be taking that for granted.
- Stephen
From: Peter Steele [mailto:[EMAIL PROTECTED]
Sent: Thursday, June 05, 2008 1:18 PM
To: log4cxx-user@logging.apache.org
Subject: Is it safe to has different processes on the same machine
log to the same file?
This is what we’re doing right now and it appears to be working
fine. Is this safe to do though, as a general rule?
Depends on the file IO library under log4cxx for FileAppenders.
RollingFileAppenders are likely very poorly behaved. The file size is
determined from the initialize size and the number of bytes written by
the appender, so file will likely be larger than the specified value
when rolled. When they are rolled, either renaming may fail (usually
on Windows) or one instance of rename the previous file and start a
new one which other instances continue to write to the old, now
renamed, file. When the other instances attempt to roll, bad things
are likely to happen.
log4cxx mimics log4j and there is no mechanism in Java to coordinate
access to a shared file between multiple instances. The standard
answer to that question for log4j is that database or network
appenders should be used in that scenario.
