Carter Kozak created LOG4J2-2423:
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Summary: Rolled files are not deleted when a date is used in the
pattern
Key: LOG4J2-2423
URL: https://issues.apache.org/jira/browse/LOG4J2-2423
Project: Log4j 2
Issue Type: Bug
Components: Appenders
Reporter: Carter Kozak
In my appender definition I set
filePattern="app/log/trace.%d\{yyyy-MM-dd}-%i.log.gz"
I would expect to see a maximum of 7 rolled trace logs, however I have
accumulated over 30.
While running in a debugger, in AbstractRolloverStrategy.getEligibleFiles I see
filePattern set to "trace.2018-08-22-(\d+).log.*". I would expect the date to
be replaced to something along the lines of
"trace.(\d+)-(\d+)-(\d+)-(\d+).log.*"
Based on the documentation and javadoc this doesn't appear to be entirely
unexpected, however it is odd that based on the presence of a date in the file
pattern a default rolling file appender may create up to 7 total files, or up
to 7 files per date pattern minimum interval.
I'm curious if this has been discussed elsewhere that I may have missed, or if
this is consistent with others expectation of DefaultRolloverStrategy. If so I
will update the documentation to be clearer around this point.
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