Good to know. Thanks very much, Christopher and John. -Russ On Tue, Jan 6, 2015 at 2:51 PM, Christopher <[email protected]> wrote:
> The answer is no, they won't be rolled back. And, yes, if you want this > behavior, you either need to make your mutations idempotent or disable > speculative execution. > > > -- > Christopher L Tubbs II > http://gravatar.com/ctubbsii > > On Tue, Jan 6, 2015 at 5:43 PM, Russ Weeks <[email protected]> > wrote: > >> Hi, all, >> >> When I use AccumuloOutputFormat in my MR job, I see mutations are written >> to the table before each individual map tasks completes. If speculative >> execution is enabled on my cluster and a map task is killed, will these >> mutations be rolled back? If not, should I explicitly disable speculative >> execution whenever I use AccumuloOutputFormat? >> >> Or does AccumuloOutputFormat do this internally somehow, and I'm worried >> about nothing? >> >> Thanks, >> -Russ >> > >
