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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-11139) New token allocator is broken
Date Tue, 09 Feb 2016 13:05:18 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-11139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sylvain Lebresne updated CASSANDRA-11139:
-----------------------------------------
    Assignee: Branimir Lambov

> New token allocator is broken
> -----------------------------
>
>                 Key: CASSANDRA-11139
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11139
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Tommy Stendahl
>            Assignee: Branimir Lambov
>
> It looks like the logic in the if statment in {{TokenAllocation.getStrategy()}} is broken.
> {code}
> if (replicas >= racks)
> {...}
> else if (racks == 1)
> {...}
> else
>     throw new ConfigurationException(String.format("Token allocation failed: the number
of racks %d in datacenter %s is lower than its replication factor %d.", racks, dc, replicas));
> {code}
> I think the first if statment should be {{(replicas <= racks)}}, otherwise this will
be true if we have fewer racks then replicas and I guess that should result in an exception.
> Also the {{if}} and the {{else if}} blocks should change place, it should be
> {code}
> if (racks == 1)
> {...}
> else if (replicas <= racks)
> {...}
> else
> {code}
> If {{replicas==1}} and {{racks==1}} I think you want the {{StrategyAdapter}} from {{(racks==1)}}.



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