I think your input is malformed, what does it look like? (But the error could be better.)
On Mon, Aug 9, 2010 at 3:14 PM, Simon Reavely <[email protected]> wrote: > I built and hacked together 0.4-snapshot from src > > It now finds the class files - hurrah! > However, I now get an ArrayIndexOutOfBoundsException > > > 10/08/09 16:07:14 INFO mapred.JobClient: Task Id : > attempt_201005101218_0012_m_000000_2, Status : FAILED > java.lang.ArrayIndexOutOfBoundsException: 1 > at > org.apache.mahout.cf.taste.hadoop.item.ItemIDIndexMapper.map(ItemIDIndexMapper.java:47) > at > org.apache.mahout.cf.taste.hadoop.item.ItemIDIndexMapper.map(ItemIDIndexMapper.java:31) > at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144) > at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:621) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305) > at org.apache.hadoop.mapred.Child.main(Child.java:170) > > > Looking at the source code, the issue is on the array indexing on tokens > below, which seems to be an issue > with: TasteHadoopUtils.splitPrefTokens(value.toString()); > > �...@override > protected void map(LongWritable key, > Text value, > Context context) throws IOException, > InterruptedException { > String[] tokens = TasteHadoopUtils.splitPrefTokens(value.toString()); > long itemID = Long.parseLong(tokens[transpose ? 0 : 1]); > int index = TasteHadoopUtils.idToIndex(itemID); > context.write(new VarIntWritable(index), new VarLongWritable(itemID)); > } > > Any ideas? Please note, i suspect that this might be an issue with how I > hacked together my package since I can't figure out how to create a proper > binary release from src. > > If not, I'm off to the debugger! > > Cheers, > Simon
