The collector uses the log4j framework. You can tailor log rotation behavior for collector.log by editing the log4j.xml file in the collector’s /config directory.
The default settings in the rolling file appender section for collector.log are:
<param name="MaxFileSize" value="5MB"/>
<param name="MaxBackupIndex" value="10"/>
With the default settings, Sumo will allow 10 rotations of the collector.log file, creating collector.log, collector.log.1, collector.log.2, up to collector.log.9. Logging will rotate when a file reaches 5 MB.
Once 10 rotations have occurred, resulting in total space used of 50 MB, the oldest log file data is dropped.