5
當我在3節點集羣hadoop中運行簡單的wordcount示例時,出現以下錯誤。我檢查了必要文件夾的所有寫入/讀取權限。這個錯誤並不能阻止mapreduce作業,但是所有的工作負載都會集中到集羣中的一臺機器上,其他兩臺機器在任務到達時會給出同樣的錯誤。
12/09/13 09:38:37 INFO mapred.JobClient: Task Id : attempt_201209121718_0006_m_000008_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 /hadoop/libexec/../logs/userlogs/job_201209121718_0006/attempt_201209121718_0006_m_000008_0 to /hadoop/hadoop-datastore
/mapred/local/userlogs/job_201209121718_0006/attempt_201209121718_0006_m_000008_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)
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:228)
12/09/13 09:38:37 WARN mapred.JobClient: Error reading task outputhttp://peter:50060/tasklog?plaintext=true&attemptid=attempt_201209121718_0006_m_000008_0&filter=stdout
12/09/13 09:38:37 WARN mapred.JobClient: Error reading task outputhttp://peter:50060/tasklog?plaintext=true&attemptid=attempt_201209121718_0006_m_000008_0&filter=stderr
這是什麼錯誤?
你可以分享你的Hadoop配置文件嗎? – SleepyThread
您是否找到解決方案? – vefthym