Enable oozie workflow for new mapReduce API

If you are using new MapReduce API, and wants to execute implement DAG with oozie workflow, then you
may face the below exception :

java.lang.RuntimeException: Error in configuring object
 at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)
 at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)
 at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.jav

Caused by: java.lang.reflect.InvocationTargetException

 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88)
 ... 9 more

Caused by: java.lang.RuntimeException: java.lang.RuntimeException: class TestMapper not org.apache.hadoop.mapred.Mapper
 at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:899)
 
Caused by: java.lang.RuntimeException: class TestMapper not org.apache.hadoop.mapred.Mapper
 at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:893)
 ... 16 more

To solve the above issue, we need to have two properties in workflow.xml,

<property>

    <name>mapred.reducer.new-api</name>

    <value>true</value>

  </property>

  <property>

    <name>mapred.mapper.new-api</name>

    <value>true</value>

</property>

now replace the workflow.xml in HDFS with updated one, the issue will be resolved.....