Github user ctubbsii commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/223#discussion_r103732845
--- Diff: assemble/conf/log4j-monitor.properties ---
@@ -16,23 +16,21 @@
## Log4j 1.2 file that configures logging for Accumulo Monitor
## The system properties referenced below are configured by accumulo-env.sh
-## Write out INFO and higher to log file
+## Define a log file appender
log4j.appender.file=org.apache.log4j.RollingFileAppender
-log4j.appender.file.File=${accumulo.log.dir}/${accumulo.service.id}.log
+log4j.appender.file.File=${accumulo.log.dir}/${accumulo.application}.log
log4j.appender.file.MaxFileSize=100MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.Threshold=INFO
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ISO8601} [%-8c{2}] %-5p:
%m%n
-## Keep the last few log messages for display to the user in Monitor GUI
+## Define an appender for the Accumulo Monitor to log to its own web GUI
log4j.appender.gui=org.apache.accumulo.server.monitor.LogService
-log4j.appender.gui.Keep=50
log4j.appender.gui.Threshold=WARN
-## Log accumulo messages to file and gui appenders
-log4j.logger.org.apache.accumulo=INFO, file, gui
-log4j.additivity.org.apache.accumulo=false
+## Append monitor logs to its own web GUI
+log4j.logger.org.apache.accumulo=INHERITED, gui
--- End diff --
Yes, log4j documents "INHERITED" and "NULL" as synonyms for the default
behavior of inheriting from the parent logger. It'd also be fine if we left it
as "INFO", but I figured it'd make more sense to default to the user needing to
adjust it in fewer places if they wished to change it.
INHERITED here means that it will inherit "INFO" from the root logger, but
the `gui` appender is still going to filter out anything below "WARN".
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