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From "Rene Schoenlein (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LOG4J2-679) Log rotation partly failed with error: "Unable to create directory ..."
Date Tue, 24 Jun 2014 13:50:25 GMT
Rene Schoenlein created LOG4J2-679:
--------------------------------------

             Summary: Log rotation partly failed with error: "Unable to create directory ..."
                 Key: LOG4J2-679
                 URL: https://issues.apache.org/jira/browse/LOG4J2-679
             Project: Log4j 2
          Issue Type: Bug
          Components: Appenders
    Affects Versions: 2.0-rc1
         Environment: JDK 1.6, tomcat 6, 
            Reporter: Rene Schoenlein
            Priority: Critical


Log rotation partly failed with error: "Unable to create directory ..."

I am using the following configuration (simplified for the purpose of this ticket):

{code}
<Configuration status="info" name="App1" monitorInterval="60">
  <Properties>
    <Property name="defaultLayout">[%t %d{EEE MMM dd HH:mm:ss z yyyy} &lt;%level{TRACE=6,
DEBUG=5, INFO=4, WARN=3, ERROR=2, FATAL=1}&gt;] %m%n</Property>
    <Property name="patternCharset">UTF-8</Property>
    <Property name="logDir">/var/log/app1/</Property>
    <Property name="backupDir">/var/backups/app1/%d{yyyy}/%d{MM}/</Property>
  </Properties>
  <Appenders>
    <RollingRandomAccessFile name="A" fileName="${logDir}A.log" filePattern="${backupDir}A.log-%d{yyyyMMdd}">
      <PatternLayout pattern="${defaultLayout}" charset="${patternCharset}"/>
      <Policies>
        <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
      </Policies>
    </RollingRandomAccessFile>
    <RollingRandomAccessFile name="B" fileName="${logDir}B.log" filePattern="${backupDir}B.log-%d{yyyyMMdd}">
      <PatternLayout pattern="${defaultLayout}" charset="${patternCharset}"/>
      <Policies>
        <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
      </Policies>
    </RollingRandomAccessFile>

    <!-- ... additional appenders, only differing in appender-name/log-file-name, where
removed for this ticket -->

    <RollingRandomAccessFile name="C" fileName="${logDir}Y.log" filePattern="${backupDir}Y.log-%d{yyyyMMdd}">
      <PatternLayout pattern="${defaultLayout}" charset="${patternCharset}"/>
      <Policies>
        <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
      </Policies>
    </RollingRandomAccessFile>
    <RollingRandomAccessFile name="D" fileName="${logDir}Z.log" filePattern="${backupDir}Z.log-%d{yyyyMMdd}">
      <PatternLayout pattern="${defaultLayout}" charset="${patternCharset}"/>
      <Policies>
        <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
      </Policies>
    </RollingRandomAccessFile>
  </Appenders>
  <Loggers>
    <Logger name="A" level="INFO" additivity="false">
      <AppenderRef ref="A"/>
    </Logger>
    <Logger name="B" level="INFO" additivity="false">
      <AppenderRef ref="B"/>
    </Logger>

    <!-- ... additional loggers, only differing in logger-name/appender-ref, where removed
for this ticket -->

    <Logger name="C" level="INFO" additivity="false">
      <AppenderRef ref="C"/>
    </Logger>
    <Logger name="D" level="INFO" additivity="false">
      <AppenderRef ref="D"/>
    </Logger>
  </Loggers>
</Configuration>
{code}

As part of last nights log-rotation, sub-folders "/2014/06/" had to be created on top of the
already existing "/var/backups/app1/" folder structure. 
During this log-rotation task, 2 out of ~20 files (all constantly written by the same application)
where not rotated in the desired folder "/var/backups/app1/2014/06/" but are still actively
used in the base folder. The only hint I could find regarding this issue was the following
log output from log4j (matching the rotation time):

2014-06-24 00:00:00,084 ERROR Unable to create directory /var/backups/app1/2014/06
2014-06-24 00:00:00,084 ERROR Unable to create directory /var/backups/app1/2014/06

Strangely all other log-file where correctly rotated to the identical destination directory.

Until now i was not able to reproduce this behavior in my testing environment but i suspect
that there might be an issue with handling multiple log-rotations in parallel for a "to be
created" sub-directory.



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