The number of mappers is the greater common factor for all the tables. So, it it is not a multiple, a single mapper will be assigned.
On 11/1/12 5:20 AM, "Mahsa Mofidpoor" <mofidp...@gmail.com> wrote: >Hi, > >Hive summit 2011 says for performing a bucket join the number of buckets >of >all tables has to be a multiple of each other. >Does anybody know the reason? > >Thanks you. >Mahsa
