Aggregation is not enabled. Try the nodemanager at IP:HOST

Aggregation service start
hadoop 2.2.0, I want to view Tracking UI,so I visit,then I click History of Completed Job,such as follows:

MapReduce Job job_1392601388579_0001
Attempt Number Start Time Node Logs
1 Sun Feb 16 17:44:57 PST 2014 master:8042 logs

Then I click logs,but it failed.
Aggregation is not enabled. Try the nodemanager at master:8994

I guess it must a service don’t start, which command I need to execute under
home/software/hadoop-2.2.0/sbin ? Thanks.

[hadoop  node1 sbin]$ ls    start-all.cmd    stop-dfs.cmd  
hdfs-config.cmd          start-dfs.cmd         stop-yarn.cmd  start-yarn.cmd                stop-all.cmd  

Please set /opt/mapr/hadoop/hadoop-[VERSION]/etc/hadoop/yarn-site.xml:


in yarn-site.xml to enable log aggregation.

restart NodeManager & JobHistoryServer

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