Hi I dont understand the reason for this error.
java.io.IOException: Cannot open filename /user/root/�s�t�e�p�1�/�p�a�r�t�-�0�0�0�0�0 at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.openInfo(DFSClient.java:1394) at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.(DFSClient.java:1385) at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:338) at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:171) at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:359) at org.bike.MakeNPairReduce.reduce(MakeNPairReduce.java:40) at org.bike.MakeNPairReduce.reduce(MakeNPairReduce.java:1) at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:436) at org.apache.hadoop.mapred.Child.main(Child.java:158) I have a code that scans a folder step0 to find name of files generated in the previous map-reduce phase. Then create another file with the entries for ex: if scanning finds that there are 2 files produced by 1st map-reduce phase, then new created file will have 2 entries step1/part00000 and step1/part00001 i.e. one entry for each file. Now, when I read this file in another map-reduce job, each line is read as /user/root/�s�t�e�p�1�/�p�a�r�t�-�0�0�0�0�0 . What it seems like, a string inserted by my code, when read by FSDataInputStream prefix each character of the string by a question mark (?). Why is that so? The file name part-00000 do exist inside folder step1, but reading this filename, /user/root/�s�t�e�p�1�/�p�a�r�t�-�0�0�0�0�0 , throws IOException which I can undersand that there is no such filename, but why are these ?'s infiltraded before each letter. Really appreciate if some one can help me solve this riddle? Thanks and Regards H. Kumar skype: harshit900 Blog: http://harshitkumar.wordpress.com Website: http:/kumarharmuscat.tripod.com
