Github user ctubbsii commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/223#discussion_r103739128
--- Diff: assemble/conf/log4j-service.properties ---
@@ -13,43 +13,47 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-## Log4j 1.2 file that configures logging for all Accumulo services
(Master, TabletServer, GC & Tracer) except Monitor
+## Log4j 1.2 file that configures logging for all Accumulo services
(Master, TabletServer, GC, and Tracer) except 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
-## Forwards Accumulo messages at WARN or higher to Accumulo Monitor
-log4j.appender.monitor=org.apache.accumulo.start.util.AsyncSocketAppender
-log4j.appender.monitor.RemoteHost=${accumulo.monitor.host}
-log4j.appender.monitor.Port=${accumulo.monitor.log.port}
-log4j.appender.monitor.Application=${accumulo.service.id}
+## Define an appender to send important logs to the the primary Accumulo
Monitor
+## The primary monitor is the one currently holding a shared lock in
ZooKeeper,
+## and is typically the one that started first.
+log4j.appender.monitor=org.apache.accumulo.monitor.util.AccumuloMonitorAppender
log4j.appender.monitor.Threshold=WARN
-## Configures Audit logs which are OFF by default.
+## Uncomment to define a log file appender for audit logs
#log4j.appender.audit=org.apache.log4j.DailyRollingFileAppender
-#log4j.appender.audit.File=${accumulo.log.dir}/${accumulo.audit.log}
+#log4j.appender.audit.File=${accumulo.log.dir}/${accumulo.application}.audit
--- End diff --
I'm also curious if there would have been problems with different processes
writing to the same file. I doubt the DailyRollingFileAppender used some sort
of filesystem-independent lock mechanism to avoid corruption.
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