Hi Alicia , Cassandra input format creates mappers as many as vnodes. It is a known issue. You need to lower the number of vnodes :(
I have a simple solution for that and ready to write a patch. Should I create a ticket about that? I don't know the procedure about that. Regards, Cem On Thu, Mar 28, 2013 at 2:30 PM, Alicia Leong <lccali...@gmail.com> wrote: > Hi All, > > I have 3 nodes of Cassandra 1.2.3 & edited the cassandra.yaml for vnodes. > > When I execute a M/R job .. the console showed HUNDRED of Map tasks. > > May I know, is the normal since is vnodes? If yes, this have slow the M/R > job to finish/complete. > > > Thanks >
