15/07/01 20:14:41 FATAL containermanager.AuxServices: Failed to initialize mapreduce.shuffle
java.lang.IllegalArgumentException: The ServiceName: mapreduce.shuffle set in yarn.nodemanager.aux-services is invalid.The valid service name should only contain a-zA-Z0-9_ and can not start with numbers
yarn-site.conf默认配置是
<property>
<name>yarn.nodemanager.aux-services.mapreduce_shuffle.class</name>
<value>mapreduce.shuffle</value>
<description>shuffle service that needs to be set for Map Reduce to run </description>
</property>
把 mapreduce.shuffle 改为mapreduce_shuffle 问题解决
mapreduce.shuffle set in yarn.nodemanager.aux-services is invalid
原文：http://www.cnblogs.com/zihunqingxin/p/4617146.html