我试过运行一个hadoop map减少字数的问题.据我所知,我正确设置了HDFS和一切.
当我执行它时,
我在尝试运行简单的字数统计问题时遇到此错误.我是Hadoop的新手.任何帮助如何解决这个问题将不胜感激.
13/06/13 20:21:17 INFO input.FileInputFormat: Total input paths to process : 4
13/06/13 20:21:17 INFO util.NativeCodeLoader: Loaded the native-hadoop library
13/06/13 20:21:17 WARN snappy.LoadSnappy: Snappy native library not loaded
13/06/13 20:21:17 INFO mapred.JobClient: Running job: job_201306131940_0007
13/06/13 20:21:18 INFO mapred.JobClient: map 0% reduce 0%
13/06/13 20:21:21 INFO mapred.JobClient: Task Id : attempt_201306131940_0007_m_000005_0, Status : FAILED
java.lang.Throwable: Child Error
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:271)
Caused by: java.io.IOException: Creation of symlink from /home/vraju/Desktop/hadoop/libexec/../logs/userlogs/job_201306131940_0007/attempt_201306131940_0007_m_000005_0 to /app/hadoop/tmp/mapred/local/userlogs/job_201306131940_0007/attempt_201306131940_0007_m_000005_0 failed.
at org.apache.hadoop.mapred.TaskLog.createTaskAttemptLogDir(TaskLog.java:110)
at org.apache.hadoop.mapred.DefaultTaskController.createLogDir(DefaultTaskController.java:71)
at org.apache.hadoop.mapred.TaskRunner.prepareLogFiles(TaskRunner.java:316) …