Namenodes don't start after add spark_suffle to yarn-site.xml

[#1]

After add 

<property>
    <name>yarn.nodemanager.aux-services</name>
    <value>spark_shuffle,mapreduce_shuffle</value>
  </property>
<property>
    <name>yarn.nodemanager.aux-services.spark_shuffle.class</name>
    <value>org.apache.spark.network.yarn.YarnShuffleService</value>
</property>

I am getting the following error:

2017-08-02 13:52:06,207 FATAL org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices: Failed to initialize spark_shuffle
java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.spark.network.yarn.YarnShuffleService not found
	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2234)
	at org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices.serviceInit(AuxServices.java:121)
	at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
	at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
	at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.serviceInit(ContainerManagerImpl.java:236)
	at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
	at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:318)
	at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:562)
	at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:609)
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.spark.network.yarn.YarnShuffleService not found
	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2202)
	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2226)
	... 10 more
Caused by: java.lang.ClassNotFoundException: Class org.apache.spark.network.yarn.YarnShuffleService not found
	at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2108)
	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2200)

I have in my CLASSPATH the library need it

<property>
    <name>yarn.application.classpath</name>
    <value>$HADOOP_CLIENT_CONF_DIR,$HADOOP_CONF_DIR,$HADOOP_COMMON_HOME/*,$HADOOP_COMMON_HOME/lib/*,$HADOOP_HDFS_HOME/*,$HADOOP_HDFS_HOME/lib/*,$HADOOP_YARN_HOME/*,$HADOOP_YARN_HOME/lib/*,/opt/spark/yarn/spark-2.1.0-yarn-shuffle.jar</value>
  </property>
  <property>

Any ideas?

[#2]

Run 'jar -tf /opt/spark/yarn/spark-2.1.0-yarn-shuffle.jar | grep -i YarnShuffleService'

This will tell you if the jar file contains the class with the correct name.

[#3]

good spot! This is the output: jar -tf /opt/spark/yarn/spark-2.1.0-yarn-shuffle.jar | grep -i 'YarnShuffleService' org/apache/spark/network/yarn/YarnShuffleService$AppId.class org/apache/spark/network/yarn/YarnShuffleService.class

[#4]

After adding the "classpath" when I execute, 

hadoop classpath, it doesn't return the path that I have added.

Any ideas?