56f1136b_Hadoop_Troubleshooting__Possible_Problem
[Symptom] You try to run the grep example from the QuickStart but you get an error message like this: java.io.IOException: Not a file: hdfs://localhost:9000/user/ross/input/conf [Possible Solution] The easiest way to get the example run is to just start over and make the input anew. bin/hadoop dfs -rmr input bin/hadoop dfs -put conf input [Possible Problem] 
You may have created a directory inside the input directory in the HDFS. For example, this might happen if you run bin/hadoop dfs -put conf input twice in a row (this would create a subdirectory in input... why?).
Hadoop Troubleshooting
Possible Problem