> On Oct. 26, 2015, 8:27 a.m., Qian Zhang wrote: > > src/master/allocator/mesos/hierarchical.cpp, lines 1055-1057 > > <https://reviews.apache.org/r/39401/diff/5/?file=1105060#file1105060line1055> > > > > Since we know the guarentee of each quota'ed role and the gap between > > it and role's current allocation, I think it might be better to do the > > "find-grained" allocation, i.e., only allocate resources to fill the gap. > > Otherwise, we may run into the situation that we allocate too much resource > > to satisfy a role's guarentee but another role's guarentee can not be > > satisfied. > > Alexander Rukletsov wrote: > Yep, this can be the case and it was a hot debate during the design > phase. I have decided to choose this approach because it's follows the least > surprise principle for people who already familiar with DRF. I think we'll > have to revisit the strategy anyway and (most probably) introduce > `Quota.limit`. I think this is fine for MVP.
We also discussed this during the Community Sync on Nov 5th. Coarse-grained is sufficient for the MVP, and we can look at the fine-grained implications as parth of the next design doc. - Joris ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/39401/#review103958 ----------------------------------------------------------- On Nov. 9, 2015, 10:01 p.m., Alexander Rukletsov wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/39401/ > ----------------------------------------------------------- > > (Updated Nov. 9, 2015, 10:01 p.m.) > > > Review request for mesos, Bernd Mathiske, Joerg Schad, Joris Van Remoortere, > and Joseph Wu. > > > Bugs: MESOS-3718 > https://issues.apache.org/jira/browse/MESOS-3718 > > > Repository: mesos > > > Description > ------- > > See summary. > > > Diffs > ----- > > src/master/allocator/mesos/hierarchical.cpp > 14fef63714721fcda7cea3c28704766efda6d007 > > Diff: https://reviews.apache.org/r/39401/diff/ > > > Testing > ------- > > make check (Mac OS X 10.10.4) > > > Thanks, > > Alexander Rukletsov > >
