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Posted to commits@cassandra.apache.org by "deng (JIRA)" <ji...@apache.org> on 2011/09/02 03:42:13 UTC
[jira] [Created] (CASSANDRA-3121) How to know which servers to
replication
How to know which servers to replication
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Key: CASSANDRA-3121
URL: https://issues.apache.org/jira/browse/CASSANDRA-3121
Project: Cassandra
Issue Type: Bug
Components: Tools
Affects Versions: 0.8.4
Environment: Cassandra0.7.5 and Cassandra0.8.4
Reporter: deng
Fix For: 0.8.4
When we create keysapce we can set replication_factor , Assuming the cluster has five machines here.Node1,Node2,Node3,Node4,Node5. when I create keypsace at Node1 server and set replication_factor =3 ,it means that it will choose 2 servers to backup.
My question is that how we can know which 2 nodes are choosed to backup ? I can not find this answer at Cassandra0.7.5 or Cassandra0.8.4.
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[jira] [Resolved] (CASSANDRA-3121) How to know which servers to
replication
Posted by "Jonathan Ellis (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-3121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis resolved CASSANDRA-3121.
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Resolution: Not A Problem
Fix Version/s: (was: 0.8.4)
(a) there is no primary / backup distinction in cassandra
(b) if your app cares about which nodes hold a given row you are almost certainly doing it wrong, but the right place to have that discussion is the user mailing list
> How to know which servers to replication
> ----------------------------------------
>
> Key: CASSANDRA-3121
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3121
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Affects Versions: 0.8.4
> Environment: Cassandra0.7.5 and Cassandra0.8.4
> Reporter: deng
>
> When we create keysapce we can set replication_factor , Assuming the cluster has five machines here.Node1,Node2,Node3,Node4,Node5. when I create keypsace at Node1 server and set replication_factor =3 ,it means that it will choose 2 servers to backup.
> My question is that how we can know which 2 nodes are choosed to backup ? I can not find this answer at Cassandra0.7.5 or Cassandra0.8.4.
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