Stupid question for the day…
I have a file created by a mahout job of the form:
0 [356:0.3481597,359:0.3481597,358:0.3481597,361:0.3481597,360:0.3481597]
8
[356:0.34786037,359:0.34786037,358:0.34786037,361:0.34786037,360:0.34786037]
25
[284:0.34821576,286:0.34821576,287:0.34821576,288:0.34821576,289:0.34821576]
28
[452:0.34802154,454:0.34802154,453:0.34802154,456:0.34802154,455:0.34802154]
…
If this were a SequenceFile I could read it and be merrily on my way but it's a
text file. The classes written are key, value pairs <LongWritable,
VectorWritable> but the file is tab delimited text.
I was hoping to do something like:
SequenceFile.Reader reader = new SequenceFile.Reader(fs, inputFile, conf);
Writable userId = new LongWritable();
VectorWritable recommendations = new VectorWritable();
while (reader.next(userId, recommendations)) {
//do something with each pair
}
But alas Google fails me. How do you read in key, values pairs from text files
outside of a map or reduce?
