hadoop-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Sam Garrett <...@actionx.com>
Subject Reduce Task Clarification
Date Tue, 13 Aug 2013 19:51:13 GMT
I am working on a MapReduce job where I would like to have the output
sorted by a LongWritable value. I read the Anatomy of a MapReduce Run in
the Definitive Guide and it didn't say explicitly whether reduce() gets
called only once per map output key. If it does get called only once I was
thinking that I could use this:
do the sorting.

Thank you for your time.

Sam Garrett
ActionX, NYC

View raw message