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
