The problem is that NetworkTopologyStrategy will try to pick nodes that
have a different rack when going around the ring, so the second node in
each rack always gets skipped unless it was the first node picked. Your
nodes is eu-west go a,a,b,b,c,c but they should be a,b,c,a,b,c.
On Wed, Nov 13, 2013 at 11:46 AM, Katriel Traum <katr...@google.com> wrote:
> Hello list,
>
> I have a problem with my cluster ownership not being as expected.
>
> I have 2 DC cluster using NetworkTopologyStrategy on and
> EC2MultiRegionSnitch with cassandra 1.1.5. My placement strategy for all
> keyspaces is: {eu-west: 3, us-east:3 }, and I have 6 nodes in eu-west and 3
> in us-east.
> I expected the resulting effective ownership for nodes in us-east to be
> 100% (Which it is), and %50 in eu-west (Which it is not).
>
> The cluster started out with 3 nodes in eu-west, and after adding 3 more
> nodes, I got the following effective ownership:
>
> 1.1.1.1 eu-west 1a Up Normal 89.33 GB 83.33%
> 0
> 2.2.2.1 us-east 1b Up Normal 88.84 GB 100.00%
> 1
> 1.1.1.4 eu-west 1a Up Normal 75.61 GB 16.67%
> 28356863910078205288614550619314017621
> 1.1.1.2 eu-west 1b Up Normal 89 GB 83.33%
> 56713727820156410577229101238628035242
> 2.2.2.2 us-east 1d Up Normal 88.34 GB 100.00%
> 56713727820156410577229101238628035243
> 1.1.1.5 eu-west 1b Up Normal 75.43 GB 16.67%
> 85070591730234615865843651857942052863
> 1.1.1.3 eu-west 1c Up Normal 81.1 GB 83.33%
> 113427455640312821154458202477256070484
> 2.2.2.3 us-east 1e Up Normal 93.22 GB 100.00%
> 113427455640312821154458202477256070485
> 1.1.1.6 eu-west 1c Up Normal 75.39 GB 16.67%
> 141784319550391026443072753096570088105
>
> What am I missing here?
>
> TIA,
> Katriel
>
--
Derek Williams
