Hi, When I run a MapReduce job, the userlogs are stored on each Datanode.
Like: ~/hadoop_drive/hadoop/mapred/local/userlogs/job_201211011005_0018 Under this directory I have on subdirectory per job, like: drwx------ 2 hadoop hadoop 4096 nov 5 12:46 attempt_201211011005_0018_m_000010_0 drwx------ 2 hadoop hadoop 4096 nov 5 12:46 attempt_201211011005_0018_m_000016_0 drwx------ 2 hadoop hadoop 4096 nov 5 12:46 attempt_201211011005_0018_m_000017_0 drwx------ 2 hadoop hadoop 4096 nov 5 12:46 attempt_201211011005_0018_m_000021_0 Now, I want to take a look at all the logs. Is there an easy way to retrieve them? Or do I need to log in each single node and look at each directory of each task? I would like to put all the logs into a single file. Thanks, JM
