> On Jan. 5, 2016, 1:45 a.m., Guangya Liu wrote: > > docs/high-availability-framework-guide.md, line 81 > > <https://reviews.apache.org/r/41896/diff/1/?file=1181077#file1181077line81> > > > > Can you please also identify "odd number" here, such as "three or five > > instances is typical but should be a odd number" > > Neil Conway wrote: > Is an odd number of scheduler instances actually required? Offhand, I > don't see why, as long as you can reliably elect a leader -- e.g., if you > have Zk configured on 3/5 nodes, it seems to me you could use, say, 2, 4, or > 6 scheduler instances. > > Guangya Liu wrote: > I mistake this as Zk cofniguration. So can you please add some comments > here for why "three or five instances is typical"?
I'll just say "three instances is typical" -- typical tradeoff between resource utilization and fault tolerance. I don't think we need to go into more detail, but there's value in giving people a typical # of replicas. - Neil ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/41896/#review112704 ----------------------------------------------------------- On Jan. 5, 2016, 3:14 a.m., Neil Conway wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/41896/ > ----------------------------------------------------------- > > (Updated Jan. 5, 2016, 3:14 a.m.) > > > Review request for mesos, Benjamin Hindman, Ben Mahler, and Joris Van > Remoortere. > > > Bugs: MESOS-3936 > https://issues.apache.org/jira/browse/MESOS-3936 > > > Repository: mesos > > > Description > ------- > > Added guide to writing highly available Mesos frameworks. > > > Diffs > ----- > > docs/app-framework-development-guide.md > 4a43a93d080bdac37b8aee91748fea7552a1cc67 > docs/high-availability-framework-guide.md PRE-CREATION > docs/high-availability.md 31aa66220617a3f8606b185ef247c11f00735227 > docs/home.md 6f0f4b9cb9d0da1f9960ebe7f36ce186c1317535 > > Diff: https://reviews.apache.org/r/41896/diff/ > > > Testing > ------- > > Previewed via site-docker. > > Note that there's a lot more that could be said here; also, at some point we > should probably unify the "reconciliation" page with this page, and perhaps > move some of the content in the "high-availability" page here (leaving the > "high-availability" page for the operator-centric parts of configuring Mesos > to run in HA mode). > > > Thanks, > > Neil Conway > >
