hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Doug Cutting <cutt...@apache.org>
Subject Re: Reducer and Keys
Date Mon, 02 Oct 2006 16:44:47 GMT
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 TextOutputFormat 
don't care, but MapFileOutputFormat does.


View raw message