Hello everyone, I am learning the source code of Mahout. Now I have a question about org.apache.mahout.cf.taste.hadoop.item.RecommenderJob.
I have run this job in my local pseudo-mode HDFS using ml-100k as intput data. There are ten sub-jobs: PreparePreferenceMatrixJob-ItemIDIndexMapper-Reducer PreparePreferenceMatrixJob-ToItemPrefsMapper-Reducer PreparePreferenceMatrixJob-ToItemVectorsMapper-Reducer RowSimilarityJob-VectorNormMapper-Reducer RowSimilarityJob-CooccurrencesMapper-Reducer RowSimilarityJob-UnsymmetrifyMapper-Reducer RecommenderJob-SimilarityMatrixRowWrapperMapper-Reducer RecommenderJob-UserVectorSplitterMapper-Reducer RecommenderJob-Mapper-Reducer RecommenderJob-PartialMultiplyMapper-Reducer I want to take a look at the output file of every sub-job. And I have found the output files in the HDFS. But the content of these output files is just a lot of unreadable code like this: �CF�C'�B��C�B��C�C8�C�C �C(�C �B��C.�B��C���B��C'�B��Cg�C>�CO�C:�C �C�CR�C3�C �C �C�C�CVCH�C}C$yC�vC>uC]�CoC'�C�CdC�bCQaC `C2_C$YC'XCRC(�COCN�B�GCFCEC<@C)8CI2C��C Is it because the compression mechanism of Mahout ? Could someone tell me how and where to check the intermediate output files ? Thank you all.
