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Posted to commits@cassandra.apache.org by "Jignesh Dhruv (JIRA)" <ji...@apache.org> on 2010/07/20 18:55:53 UTC
[jira] Created: (CASSANDRA-1304) DatacenterShardStrategy nodetool
ring command shows incorrect/duplicate nodes
DatacenterShardStrategy nodetool ring command shows incorrect/duplicate nodes
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Key: CASSANDRA-1304
URL: https://issues.apache.org/jira/browse/CASSANDRA-1304
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Jignesh Dhruv
Hello,
We are planning to use DatacenterShardStrategy for our application. In cassandra-rack.properties file we define the IP address and the RACK information for each machine and in datacenters.properties we define how many copies needs to be created in each datacenter.
When we load the data, correct copies gets created in each datacenter however when we run the ring command using nodeTool, we do not see all the nodes in the cluster.
Say we have 2 DC's and each DC has 5 machines, and one data copy in each datacenter. Now when we run the ring command we see 7 machines from DC1 and 3 from DC2. i.e. same node from DC1 gets displayed twice or thrice with a different key address.
I believe this is eventually creating problem as the data is not balanced properly within a datacenter.
Also at times when we run nodeTool-loadBalance data gets moved from one datacenter to another instead of being balanced within the same datacenter.
Can you please look into this issue?
Thanks,
Jignesh
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[jira] Resolved: (CASSANDRA-1304) DatacenterShardStrategy nodetool
ring command shows incorrect/duplicate nodes
Posted by "Jonathan Ellis (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-1304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis resolved CASSANDRA-1304.
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Resolution: Duplicate
I believe this is the same as CASSANDRA-1291, assuming you're using trunk. (If you're not using trunk, you shouldn't be using DatacenterShardStrategy.)
> DatacenterShardStrategy nodetool ring command shows incorrect/duplicate nodes
> -----------------------------------------------------------------------------
>
> Key: CASSANDRA-1304
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1304
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Jignesh Dhruv
>
> Hello,
> We are planning to use DatacenterShardStrategy for our application. In cassandra-rack.properties file we define the IP address and the RACK information for each machine and in datacenters.properties we define how many copies needs to be created in each datacenter.
> When we load the data, correct copies gets created in each datacenter however when we run the ring command using nodeTool, we do not see all the nodes in the cluster.
> Say we have 2 DC's and each DC has 5 machines, and one data copy in each datacenter. Now when we run the ring command we see 7 machines from DC1 and 3 from DC2. i.e. same node from DC1 gets displayed twice or thrice with a different key address.
> I believe this is eventually creating problem as the data is not balanced properly within a datacenter.
> Also at times when we run nodeTool-loadBalance data gets moved from one datacenter to another instead of being balanced within the same datacenter.
> Can you please look into this issue?
> Thanks,
> Jignesh
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