一：如下异常：
Starting Job
16/06/30 01:15:34 INFO client.RMProxy: Connecting to ResourceManager at master/192.168.10.50:8032
16/06/30 01:15:35 INFO input.FileInputFormat: Total input paths to process : 2
16/06/30 01:15:35 INFO mapreduce.JobSubmitter: number of splits:2
16/06/30 01:15:35 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1467220503311_0001
16/06/30 01:15:35 INFO impl.YarnClientImpl: Submitted application application_1467220503311_0001
16/06/30 01:15:35 INFO mapreduce.Job: The url to track the job: http://master:8088/proxy/application_1467220503311_0001/
16/06/30 01:15:35 INFO mapreduce.Job: Running job: job_1467220503311_0001
二：分析解决
1：可能由于集群所在的空间磁盘不足所致。
2.yarn配置不完整所致。修改前：
<configration>：
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
</configration>
修改后：
<configuration>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>master</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.log-aggregation-enable</name>
<value>true</value>
</property>
<property>
<name>yarn.log-aggregation.retain-seconds</name>
<value>604800</value>
</property>
</configuration>
重启集群start-all.sh即可！
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作者：顺顺顺子
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