If I use one node for reduce, hadoop can sort the result. If I use 30 nodes for reduce, the result is part-00000 ~ part-00029.How make all the 30 parts sort globally and all the files in part-00001 are greater that part-00000 ?
Thanks a lot
If I use one node for reduce, hadoop can sort the result. If I use 30 nodes for reduce, the result is part-00000 ~ part-00029.How make all the 30 parts sort globally and all the files in part-00001 are greater that part-00000 ?
Thanks a lot