As shown below, the log4j12-api jar replaces log4j.jar and passes all the Log4j 1.x logging calls to Log4j 2. This is usually what is wanted.
If you still want the "real" log4j 1.x then leave log4j.jar and remove log4j12-api.jar. Ralph On Oct 19, 2012, at 9:19 AM, Zhu Wayne wrote: > Thanks Ralph. I looked at POM but could not find how to use both log4j1.2.x > and log4j2 together. I can run embedded agent code with log4j2 alone fine. > The issue is that Hadoop Mapreduce code using log4j call my PIG UDF(user > defined function) which uses log4j2. Somehow, I have to make these two > co-exist. > > On Fri, Oct 19, 2012 at 11:02 AM, Ralph Goers > <ralph.go...@dslextreme.com>wrote: > >> I've gotten the embedded agent working. It is a bit messy with dependency >> management. Here is a sample pom. I will add this to the documentation. >> >> <project xmlns="http://maven.apache.org/POM/4.0.0"; xmlns:xsi=" >> http://www.w3.org/2001/XMLSchema-instance"; >> xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 >> http://maven.apache.org/xsd/maven-4.0.0.xsd";> >> <modelVersion>4.0.0</modelVersion> >> <groupId>com.myapp</groupId> >> <artifactId>myapp</artifactId> >> <version>0.0.1-SNAPSHOT</version> >> <name>My App</name> >> <description>App to test log4j appender</description> >> >> <properties> >> <log4j.version>2.0-beta1</log4j.version> >> <slf4j.version>1.6.6</slf4j.version> >> <jackson.version>1.9.3</jackson.version> >> </properties> >> >> <dependencyManagement> >> <dependencies> >> <dependency> >> <groupId>org.slf4j</groupId> >> <artifactId>slf4j-api</artifactId> >> <version>${slf4j.version}</version> >> </dependency> >> <dependency> >> <groupId>org.slf4j</groupId> >> <artifactId>slf4j-ext</artifactId> >> <version>${slf4j.version></version> >> </dependency> >> <dependency> >> <groupId>org.apache.logging.log4j</groupId> >> <artifactId>log4j-api</artifactId> >> <version>${log4j2_version}</version> >> </dependency> >> <dependency> >> <groupId>org.apache.logging.log4j.adapters</groupId> >> <artifactId>log4j12-api</artifactId> >> <version>${log4j2_version}</version> >> </dependency> >> <dependency> >> <groupId>org.apache.logging.log4j</groupId> >> <artifactId>log4j-core</artifactId> >> <version>${log4j2_version}</version> >> </dependency> >> <dependency> >> <groupId>org.apache.logging.log4j.adapters</groupId> >> <artifactId>log4j-flume-ng</artifactId> >> <version>${log4j2_version}</version> >> </dependency> >> <dependency> >> <groupId>org.apache.logging.log4j.adapters</groupId> >> <artifactId>slf4j-impl</artifactId> >> <version>${log4j2_version}</version> >> </dependency> >> <dependency> >> <groupId>org.apache.logging.log4j.adapters</groupId> >> <artifactId>log4j-jcl</artifactId> >> <version>${log4j2_version}</version> >> </dependency> >> <dependency> >> <groupId>org.apache.logging.log4j.adapters</groupId> >> <artifactId>log4j-web</artifactId> >> <version>${log4j2_version}</version> >> </dependency> >> <dependency> >> <groupId>org.codehaus.jackson</groupId> >> <artifactId>jackson-core-asl</artifactId> >> <version>${jackson.version}</version> >> </dependency> >> <dependency> >> <groupId>org.codehaus.jackson</groupId> >> <artifactId>jackson-mapper-asl</artifactId> >> <version>${jackson.version}</version> >> </dependency> >> <dependency> >> <groupId>org.codehaus.jackson</groupId> >> <artifactId>jackson-jaxrs</artifactId> >> <version>${jackson.version}</version> >> </dependency> >> <dependency> >> <groupId>org.codehaus.jackson</groupId> >> <artifactId>jackson-xc</artifactId> >> <version>${jackson.version}</version> >> </dependency> >> </dependencies> >> </dependencyManagement> >> >> <dependencies> >> <!-- Log4j 2 API --> >> <dependency> >> <groupId>org.apache.logging.log4j</groupId> >> <artifactId>log4j-api</artifactId> >> </dependency> >> <!-- Log4j 1.x API --> >> <dependency> >> <groupId>org.apache.logging.log4j.adapters</groupId> >> <artifactId>log4j12-api</artifactId> >> </dependency> >> <!-- Log4j 2 implementation --> >> <dependency> >> <groupId>org.apache.logging.log4j</groupId> >> <artifactId>log4j-core</artifactId> >> </dependency> >> <!-- SLF4J to Log4j 2 binding --> >> <dependency> >> <groupId>org.apache.logging.log4j.adapters</groupId> >> <artifactId>slf4j-impl</artifactId> >> </dependency> >> <!-- SLF4J API --> >> <dependency> >> <groupId>org.slf4j</groupId> >> <artifactId>slf4j-api</artifactId> >> </dependency> >> <!-- SLF4J extensions --> >> <dependency> >> <groupId>org.slf4j</groupId> >> <artifactId>slf4j-ext</artifactId> >> </dependency> >> <!-- Commson Logging to Log4j 2 binding --> >> <dependency> >> <groupId>org.apache.logging.log4j.adapters</groupId> >> <artifactId>log4j-jcl</artifactId> >> </dependency> >> <!-- Log4j 2 Servlet Context Listener --> >> <dependency> >> <groupId>org.apache.logging.log4j.adapters</groupId> >> <artifactId>log4j-web</artifactId> >> </dependency> >> <!-- Avro transport protocol - required for Flume --> >> <dependency> >> <groupId>org.apache.avro</groupId> >> <artifactId>avro</artifactId> >> <version>1.6.3</version> >> </dependency> >> <!-- Hadoop core - required by embedded Flume Agent --> >> <dependency> >> <groupId>org.apache.hadoop</groupId> >> <artifactId>hadoop-core</artifactId> >> <version>1.0.3</version> >> <exclusions> >> <exclusion> >> <groupId>org.mortbay.jetty</groupId> >> <artifactId>servlet-api</artifactId> >> </exclusion> >> <exclusion> >> <groupId>org.mortbay.jetty</groupId> >> <artifactId>servlet-api-2.5</artifactId> >> </exclusion> >> <exclusion> >> <groupId>junit</groupId> >> <artifactId>junit</artifactId> >> </exclusion> >> </exclusions> >> </dependency> >> <!-- Flume File Channel - required by embedded Flume agent --> >> <dependency> >> <groupId>org.apache.flume.flume-ng-channels</groupId> >> <artifactId>flume-file-channel</artifactId> >> <version>1.2.0</version> >> <exclusions> >> <exclusion> >> <groupId>log4j</groupId> >> <artifactId>log4j</artifactId> >> </exclusion> >> <exclusion> >> <groupId>org.slf4j</groupId> >> <artifactId>slf4j-log4j12</artifactId> >> </exclusion> >> </exclusions> >> </dependency> >> </dependencies> >> </project> >> >> >> On Oct 19, 2012, at 8:50 AM, Zhu Wayne wrote: >> >>> Greetings! >>> I am trying to use Log4j2 Flume Embedded Agent in PIG UDF code to send >> UDF >>> logs from Data Nodes. However, Hadoop is on log4j 1.2.x version. How >> could >>> I use both log4j and log4j2 on the same JVM? PIG UDF using log4j2 will be >>> called in Hadoop MapReduce using log4j 1.2.x. >>> >>> Regards, >>> Wayne >> >> --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-user-h...@logging.apache.org
