我试图处理来自hadoop的xml文件，在调用xml文件上的word count作业时出现以下错误。

13/07/25 12:39:57 INFO mapred.JobClient: Task Id : attempt_201307251234_0001_m_000008_0, Status : FAILED
Too many fetch-failures
13/07/25 12:39:58 INFO mapred.JobClient:  map 99% reduce 0%
13/07/25 12:39:59 INFO mapred.JobClient:  map 100% reduce 0%
13/07/25 12:40:56 INFO mapred.JobClient: Task Id : attempt_201307251234_0001_m_000009_0, Status : FAILED
Too many fetch-failures
13/07/25 12:40:58 INFO mapred.JobClient:  map 99% reduce 0%
13/07/25 12:40:59 INFO mapred.JobClient:  map 100% reduce 0%
13/07/25 12:41:22 INFO mapred.JobClient:  map 100% reduce 1%
13/07/25 12:41:57 INFO mapred.JobClient: Task Id : attempt_201307251234_0001_m_000015_0, Status : FAILED
Too many fetch-failures
13/07/25 12:41:58 INFO mapred.JobClient:  map 99% reduce 1%
13/07/25 12:41:59 INFO mapred.JobClient:  map 100% reduce 1%
13/07/25 12:42:57 INFO mapred.JobClient: Task Id : attempt_201307251234_0001_m_000014_0, Status : FAILED
Too many fetch-failures
13/07/25 12:42:58 INFO mapred.JobClient:  map 99% reduce 1%
13/07/25 12:42:59 INFO mapred.JobClient:  map 100% reduce 1%
13/07/25 12:43:22 INFO mapred.JobClient:  map 100% reduce 2%

从机上的hadoop-hduser-tasktracker-localhost.localdomain.log文件出现以下错误。

2013-07-25 12:38:58,124 WARN org.apache.hadoop.mapred.TaskTracker: getMapOutput(attempt_201307251234_0001_m_000001_0,0) failed :
org.apache.hadoop.util.DiskChecker$DiskErrorException: Could not find taskTracker/hduser/jobcache/job_201307251234_0001/attempt_201307251234_0001_m_000001_0/output/file.out.index in any of the configured local directories
        at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathToRead(LocalDirAllocator.java:429)

当我运行文本文件时，这个工作正常