Problem with the DFS

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Problem with the DFS

howard chen
I am testing the word count demo, e.g.

bin/hadoop jar hadoop-0.8.0-examples.jar wordcount -m 40 -r 12 /in /out

This example work before, but I don't know why suddenly it is not working, i.e.

06/12/03 19:14:05 ERROR mapred.JobClient: Input directory /in in local
is invalid.
java.io.IOException: Input directory /in in local is invalid.


and from the namenode log, i found:

2006-12-03 19:12:37,460 WARN org.apache.hadoop.dfs.StateChange: DIR*
FSDirectory.unprotectedDelete: failed to remove
/hadoop/mapred/.system.crc because it does not exist
2006-12-03 19:12:37,470 WARN org.apache.hadoop.dfs.StateChange: DIR*
FSDirectory.unprotectedDelete: failed to remove /hadoop/mapred/system
because it does not exist

are they related?

remark: I can still put files into the DFS using -put

thanks for any comments