Re: this seems like a flaw in Node Selection

2014-03-20 Thread Robert Coli
On Thu, Mar 20, 2014 at 1:17 PM, Brian Tarbox wrote: > Yes, I was going to say (sorry for the brain-freeze) that this is behavior > in Pelops not in C* itself. > *OH* I presumed you were talking about the code in Cassandra that does the analogous thing.. :D Yes, obviously don't disable the

Re: this seems like a flaw in Node Selection

2014-03-20 Thread Brian Tarbox
Yes, I was going to say (sorry for the brain-freeze) that this is behavior in Pelops not in C* itself. On Thu, Mar 20, 2014 at 4:15 PM, Tyler Hobbs wrote: > Brian, > > Are you referring to Pelops? The code you mentioned doesn't exist in > Cassandra. > > > On Thu, Mar 20, 2014 at 3:07 PM, Rober

Re: this seems like a flaw in Node Selection

2014-03-20 Thread Tyler Hobbs
Brian, Are you referring to Pelops? The code you mentioned doesn't exist in Cassandra. On Thu, Mar 20, 2014 at 3:07 PM, Robert Coli wrote: > On Thu, Mar 20, 2014 at 1:03 PM, Brian Tarbox wrote: > >> Does this still apply since we're using 1.2.13? (should have said that >> in the original mes

Re: this seems like a flaw in Node Selection

2014-03-20 Thread Robert Coli
On Thu, Mar 20, 2014 at 1:03 PM, Brian Tarbox wrote: > Does this still apply since we're using 1.2.13? (should have said that in > the original message)> > I checked the cassandra-1.2 branch to verify that the "dynamic_snitch" config file option is still supported there; it is. =Rob

Re: this seems like a flaw in Node Selection

2014-03-20 Thread Brian Tarbox
Does this still apply since we're using 1.2.13? (should have said that in the original message)> Thank you. On Thu, Mar 20, 2014 at 3:57 PM, Robert Coli wrote: > On Thu, Mar 20, 2014 at 12:31 PM, Brian Tarbox > wrote: > >> I've seen this problem with other companies and products: leastloade

Re: this seems like a flaw in Node Selection

2014-03-20 Thread Robert Coli
On Thu, Mar 20, 2014 at 12:31 PM, Brian Tarbox wrote: > I've seen this problem with other companies and products: leastloaded as a > means of picking servers is almost always liable to death spirals when a > server can have a failure. > > Is there any way to configure away from this in C*? > Dis

this seems like a flaw in Node Selection

2014-03-20 Thread Brian Tarbox
I've noticed that one of my systems is getting hammered...and that more and more traffic is being sent to the system having trouble. Looking at LeastLoadedNodeSelector.java I can see why. LoadLoadedNodeSelector finds the node in the cluster that is least loaded but its calculation of least loaded