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From Jordi Blasi Uribarri <>
Subject SamzaException: no job factory class defined
Date Wed, 18 Mar 2015 15:45:53 GMT

I am trying to run my first job (publish what receives) in Samza and I think that all the
dependencies where added by configuring the Maven repositories (solved in a recent question
to the list). I am getting another exception on the Job runner:

#/opt/jobs# bin/ --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory
java version "1.7.0_75"
OpenJDK Runtime Environment (IcedTea 2.5.4) (7u75-2.5.4-2)
OpenJDK 64-Bit Server VM (build 24.75-b04, mixed mode)
/usr/lib/jvm/java-7-openjdk-amd64/bin/java -Dlog4j.configuration=file:bin/log4j-console.xml
-Dsamza.log.dir=/opt/jobs -Xmx768M -XX:+PrintGCDateStamps -Xloggc:/opt/jobs/gc.log
-XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=10241024 -d64 -cp /opt/hadoop/conf:/opt/jobs/lib/samzafroga-0.0.1-SNAPSHOT.jar:/opt/jobs/lib/samzafroga-0.0.1-SNAPSHOT-jar-with-dependencies.jar
org.apache.samza.job.JobRunner --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory
log4j: reset attribute= "false".
log4j: Threshold ="null".
log4j: Level value for root is  [INFO].
log4j: root level set to INFO
log4j: Class name: [org.apache.log4j.ConsoleAppender]
log4j: Parsing layout of class: "org.apache.log4j.PatternLayout"
log4j: Setting property [conversionPattern] to [%d{dd MMM yyyy HH:mm:ss} %5p %c{1} - %m%n].
log4j: Adding appender named [consoleAppender] to category [root].
log4j: Class name: [org.apache.log4j.RollingFileAppender]
log4j: Setting property [append] to [false].
log4j: Setting property [file] to [out/learning.log].
log4j: Parsing layout of class: "org.apache.log4j.PatternLayout"
log4j: Setting property [conversionPattern] to [%d{ABSOLUTE} %-5p [%c{1}] %m%n].
log4j: setFile called: out/learning.log, false
log4j: setFile ended
log4j: Adding appender named [fileAppender] to category [root].
Exception in thread "main" org.apache.samza.SamzaException: no job factory class defined
        at org.apache.samza.job.JobRunner$.main(JobRunner.scala:37)
        at org.apache.samza.job.JobRunner.main(JobRunner.scala)

My properties file is  this:

This is the code job code:

package samzafroga;

import org.apache.samza.config.Config;
import org.apache.samza.system.IncomingMessageEnvelope;
import org.apache.samza.system.OutgoingMessageEnvelope;
import org.apache.samza.system.SystemStream;
import org.apache.samza.task.MessageCollector;
import org.apache.samza.task.StreamTask;
import org.apache.samza.task.TaskContext;
import org.apache.samza.task.TaskCoordinator;

public class job1 implements StreamTask {
                private final SystemStream OUTPUT_STREAM = new SystemStream("kafka", "beste");

                public void process(IncomingMessageEnvelope envelope, MessageCollector collector,
TaskCoordinator coordinator)
                               String msg = (String)envelope.getMessage();
                               String outmsg = msg;
                               collector.send(new OutgoingMessageEnvelope(OUTPUT_STREAM, outmsg));

I have been trying to read the code in the file JobRunner.scala, that apparently is the one
generation the exception and as I understand is having a problem . I am not really sure if
the problem is with the task.class definition or I still have something missing in the system.

Thanks in advance,

Jordi Blasi Uribarri
Área I+D+i
Oficina Bilbao

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