do you have any sample code of that , it ll be very helpful to me On Mon, Jan 9, 2012 at 6:08 PM, Bhavesh Shah <bhavesh25s...@gmail.com>wrote:
> Hello, > when you use the context.write(key,value), it appears as (seperated by > tab): > (key) (value) > (Text) (IntWritable) > hive 1 > hadoop 2 > > I am also new to Hadoop but faced this problems previously. > What I did that > I had combine the value in mapper by "," and then I passed it to > context.write > > > On Mon, Jan 9, 2012 at 5:56 PM, vikas Srivastava <hadooph...@gmail.com>wrote: > >> Hi Bhavesh Shah , >> >> thanks for you reply but the this is , >> >> my Mapper is sending >> *context.write(new Text(catagoryAll), new IntWritable(val));* >> >> and my reducer is like >> *context.write(key,new IntWritable(sum));* >> * >> * >> and these provide result like >> >> hive 1 >> hadoop 2 >> >> and wat i want is output like >> >> hive,1 >> hadoop,2 >> >> hope i m able to make u understand >> >> so how can i set this in mapper or reducer. >> >> >> On Mon, Jan 9, 2012 at 5:44 PM, Bhavesh Shah <bhavesh25s...@gmail.com>wrote: >> >>> Hello, >>> >>> >>> >>> *1:- How to format output from reduce( like default is >>> tab separator can we make it "," separator) >>> * >>> Instead of formatting output in reduce, you set it in map phase when you >>> set the value for mapper. In that you can set according to our formayt >>> e.g. word.set(fname+" "+lname); >>> and give it to output collector >>> >>> >>> *2:- and how to make output in different directories * >>> *according to reducer values. >>> >>> *Refer this link, here is the solution*: >>> * >>> >>> https://sites.google.com/site/hadoopandhive/home/how-to-write-output-to-multiple-named-files-in-hadoop-using-multipletextoutputformat >>> >>> >>> >>> -- >>> Regards, >>> Bhavesh Shah >>> >>> >>> On Mon, Jan 9, 2012 at 5:31 PM, vikas Srivastava >>> <hadooph...@gmail.com>wrote: >>> >>>> Hi folks, >>>> >>>> i have few question like >>>> >>>> 1:- How to format output from reduce( like default is tab separator can >>>> we make it "," separator) >>>> 2:- and how to make output in different directories according to >>>> reducer values. >>>> >>>> >>>> Thanks in advance >>>> >>>> r >>>> >>> >>> >>> >>> >> > > > -- > Regards, > Bhavesh Shah > >
