The auxService:mapreduce_shuffle does not exist
當提交作業出現類似下面的異常信息時：
INFO mapreduce.Job: Task Id : attempt_1383017347984_0001_m_000000_0, Status : FAILED
Container launch failed for container_1383017347984_0001_01_000002 : org.apache.hadoop.yarn.exceptions.InvalidAuxServiceException: The auxService:
mapreduce_shuffle does not exist
解決辦法：
在yarn-site.xml 配置文件中增加：
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>