2014-09-09 17:25:44,040 WARN  mapred.LocalJobRunner - job_local_0001org.apache.hadoop.util.DiskChecker$DiskErrorException: Could not find any valid local directory for taskTracker/jobcache/job_local_0001/attempt_local_0001_m_000000_0/output/spill0.out    at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathForWrite(LocalDirAllocator.java:343)    at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:124)    at org.apache.hadoop.mapred.MapOutputFile.getSpillFileForWrite(MapOutputFile.java:107)    at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpill(MapTask.java:1221)    at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1129)    at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:359)    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)    at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:177)

解决方案：http://blog.csdn.net/wfp458113181wfp/article/details/8611218

df -h