On Sep 30, 2006, at 3:00 PM, Albert Chern wrote:
I have noticed that the Reducer does not enforce that the key is kept
unaltered after the reduce operation. What would happen if output
with a different key was collected? I realize that the output would
no longer be sorted, but would it cause
Owen O'Malley wrote:
SequenceFile.Writer is
more than willing to write unsorted files.
However MapFile.Writer would complain, since it creates an index for
random-access, and requires that the data is well sorted. So it depends
on your output format: SequenceFileOutputFormat and
Hello,
I have noticed that the Reducer does not enforce that the key is kept
unaltered after the reduce operation. What would happen if output
with a different key was collected? I realize that the output would
no longer be sorted, but would it cause the job to fail?
Thanks,
Albert
