HADOOP-279. Provide defaults for system properties used in log4j configuration. Contributed by Owen.

git-svn-id: https://svn.apache.org/repos/asf/lucene/hadoop/trunk@412217 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -6,6 +6,10 @@ Trunk (unreleased changes)
  1. HADOOP-275.  Update the streaming contrib module to use log4j for
     its logging.  (Michel Tourn via cutting)
 
+ 2. HADOOP-279.  Provide defaults for log4j logging parameters, so
+    that things still work reasonably when Hadoop-specific system
+    properties are not provided.  (omalley via cutting)
+
 
 Release 0.3.1 - 2006-06-05
 

conf/log4j.properties

@@ -1,10 +1,14 @@
-# RootLogger - DailyRollingFileAppender
+# Define some default values that can be overridden by system properties
+hadoop.root.logger=INFO,stdout
+hadoop.log.dir=.
+hadoop.log.file=hadoop.log
+
+# Define the root logger to the system property "hadoop.root.logger".
 log4j.rootLogger=${hadoop.root.logger}
 
 # Logging Threshold
 log4j.threshhold=ALL
 
-
 #
 # Daily Rolling File Appender
 #
@@ -49,3 +53,8 @@ log4j.appender.stdout.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss} %p %c{2}: %
 #log4j.appender.RFA.layout.ConversionPattern=%d{ISO8601} %-5p %c{2} - %m%n
 #log4j.appender.RFA.layout.ConversionPattern=%d{ISO8601} %-5p %c{2} (%F:%M(%L)) - %m%n
 
+# Custom Logging levels
+
+#log4j.logger.org.apache.hadoop.mapred.JobTracker=DEBUG
+#log4j.logger.org.apache.hadoop.mapred.TaskTracker=DEBUG
+