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From Katriel Traum <katr...@google.com>
Subject Uneven effective ownership
Date Wed, 13 Nov 2013 11:46:43 GMT
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

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