hadoop-mapreduce-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From exception <except...@taomee.com>
Subject how to turn off sorting
Date Wed, 01 Dec 2010 06:42:38 GMT
Hi all,

I want to create index for a bunch of log. Out log is line based text file. Each line contains
time, uid and some other data. I want to create index for uid. So for each line, mapper will
emit a <uid,offset> pair. And the result is sorted by uid. The reducer will combine
all the offset for a single uid. The final result is put into database. So sorting by uid
is not necessary for me.

Is there any way to turn off the sorting in hadoop?

Thanks.


Mime
View raw message