Hi,
I run into some issues with Hadoop 18.2 on my Linux box: The jobs executes without any complains and they are listed in the succeeded list but there is no output data beside the "_logs" directory. The same code works with .17.2.1 Here are some sections of the logs: [logfile] had...@bock:~/logs$ tail hadoop-hadoop-jobtracker-bock.log 2008-12-23 13:30:56,707 INFO org.apache.hadoop.mapred.JobInProgress: Choosing a data-local task task_200812231229_0031_m_000001 for speculation 2008-12-23 13:30:56,707 INFO org.apache.hadoop.mapred.JobTracker: Adding task 'attempt_200812231229_0031_m_000001_1' to tip task_200812231229_0031_m_000001, for tracker 'tracker_bock:localhost/127.0.0.1:15260' 2008-12-23 13:31:01,065 INFO org.apache.hadoop.mapred.JobInProgress: Task 'attempt_200812231229_0031_m_000001_1' has completed task_200812231229_0031_m_000001 successfully. 2008-12-23 13:31:03,177 INFO org.apache.hadoop.mapred.TaskRunner: Saved output of task 'attempt_200812231229_0031_r_000000_0' to hdfs://BOCK:9000/analytics/oiprocessed/2008/12/23/Sensor d1/92a74190-2038-4c79-82c4-2de6fdc615db [/logfile] But the folder contains only a "_logs" folder which has a history file which contains: [logfile] Job JOBID="job_200812231415_0001" FINISH_TIME="1230038377844" JOB_STATUS="SUCCESS" FINISHED_MAPS="2" FINISHED_REDUCES="1" FAILED_MAPS="0" FAILED_REDUCES="0" COUNTERS="Job Counters .Data-local map tasks:2,Job Counters .Launched reduce tasks:1,Job Counters .Launched map tasks:3,Map-Reduce Framework.Reduce input records:61,Map-Reduce Framework.Map output records:61,Map-Reduce Framework.Map output bytes:7194,Map-Reduce Framework.Combine output records:0,Map-Reduce Framework.Map input records:61,Map-Reduce Framework.Reduce input groups:12,Map-Reduce Framework.Combine input records:0,Map-Reduce Framework.Map input bytes:36396,Map-Reduce Framework.Reduce output records:12,File Systems.HDFS bytes written:1533,File Systems.Local bytes written:14858,File Systems.HDFS bytes read:38679,File Systems.Local bytes read:7388,com.fatwire.analytics.scheduling.HadoopTask$Counter.MAPPEED:61 " [/logfile] So what I see is that the system runs successful and it even says it writes data! If I run the same code with .17.2.1 or in local mode with .18.2 it works and I get a part-0000 file with the expected data. Do you have any idea why it doesn't write the data? Michael
