X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=doc%2Fexamples%2Fjava-log4j%2FHello.java;h=2f1119c05e346d85d9da45f5650d1d355bf5cf24;hb=ba5b4491f94109eaca10b2c285f8d1f116a38e5c;hp=a477e334604e2732555222de7ed8452785e07cee;hpb=d7e8946293f1db01e934752dada165a85ee7099b;p=lttng-ust.git

diff --git a/doc/examples/java-log4j/Hello.java b/doc/examples/java-log4j/Hello.java
index a477e334..2f1119c0 100644
--- a/doc/examples/java-log4j/Hello.java
+++ b/doc/examples/java-log4j/Hello.java
@@ -26,6 +26,7 @@ import java.io.IOException;
 import org.apache.log4j.Appender;
 import org.apache.log4j.BasicConfigurator;
 import org.apache.log4j.Logger;
+import org.apache.log4j.Level;
 import org.lttng.ust.agent.log4j.LttngLogAppender;
 
 /**
@@ -64,6 +65,17 @@ public class Hello {
 	 *             command line.
 	 */
 	public static void main(String args[]) throws IOException {
+
+		/*
+		 * Set lowest level to make sure all event levels are logged.
+		 * Any jar can override the default log4j rootLogger level
+		 * and a logger with no explicit level defaults to the non-null
+		 * parent level. Events could be ignored if the inherited value
+		 * is to low.
+		 * e.g BSF  -> https://issues.apache.org/jira/browse/BSF-24
+		 */
+		HELLO_LOG.setLevel(Level.ALL);
+
 		/* Start with the default Log4j configuration, which logs to console */
 		BasicConfigurator.configure();