Owen O'Malley wrote: > > On Dec 16, 2008, at 9:14 AM, David Coe wrote: > >> Does the SequenceFileOutputFormat work with NullWritable as the value? > > Yes.
Owen O'Malley wrote: > It means you are trying to write a null value. Your reduce is doing > something like: > > output.collect(key, null); > > In TextOutputFormat, that is ok and just skips it. > SequenceFileOutputFormat doesn't like nulls. > > -- Owen Since the SequenceFileOutputFormat doesn't like nulls, how would I use NullWritable? Obviously output.collect(key, null) isn't working. If I change it to output.collect(key, new IntWritable()) I get the result I want (plus an int that I don't), but output.collect(key, new NullWritable()) does not work. Thanks again. David
