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From Шамим <sre...@yandex.ru>
Subject Data not replicating to all datacenters
Date Mon, 03 Dec 2012 14:06:12 GMT
Hello Owen,
  Seems you did not configure token for all nodes correctly. See the section Calculating Tokens
for multiple data centers here http://www.datastax.com/docs/0.8/install/cluster_init

Best regards 
Shamim
---
On Mon, Dec 3, 2012 at 4:42 PM, Owen Davies <cassandra@obduk.com> wrote:

    We have a 2 data center test cassandra setup running, and are writing
    to it using LOCAL_QUORUM. When reading, sometimes the data is there,
    sometimes it is not, which we think is a replication issue, even
    though we have left it plenty of time after the writes.

    We have the following setup:

    cassandra -v: 1.1.6

    cassandra.yaml
    -----------------------

    cluster_name: something

    endpoint_snitch: PropertyFileSnitch

    cassandra-topology.properties
    --------------------------------------------
    192.168.1.1=dc1:rack1
    192.168.1.2=dc1:rack1
    192.168.1.3=dc1:rack1

    192.168.2.1=dc2:rack1
    192.168.2.2=dc2:rack1
    192.168.2.3=dc3:rack1

    default=nodc:norack

    cassandra-cli
    --------------------
    Keyspace: example:
      Replication Strategy: org.apache.cassandra.locator.NetworkTopologyStrategy
      Durable Writes: true
        Options: [dc1:3, dc2:3]

    nodetool ring
    -------------------

    Address         DC          Rack        Status State   Load
    Effective-Ownership Token


    159447687142037741049740936276011715300
    192.168.1.2   dc1          rack1       Up     Normal  111.17 GB
    100.00%             67165620003619490909052924699950283577
    192.168.1.1   dc1          rack1       Up     Normal  204.57 GB
    100.00%             71045951808949151217931264995073558408
    192.168.2.1   dc2         rack1       Up     Normal  209.92 GB
    100.00%             107165019770579893816561717940612111506
    192.168.1.3   dc1          rack1       Up     Normal  209.92 GB
    100.00%             114165363957966360026729000065495595953
    192.168.2.3   dc2         rack1       Up     Normal  198.22 GB
    100.00%             147717787092318068320268200174271353451
    192.168.2.2   dc2         rack1       Up     Normal  179.31 GB
    100.00%             159447687142037741049740936276011715300

    Does anyone have any ideas why every server does not have the same
    amount of data on?

    Thanks,

    Owen

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