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https://issues.apache.org/jira/browse/CASSANDRA-21006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcus Eriksson updated CASSANDRA-21006:
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    Status: Ready to Commit  (was: Review In Progress)

+1

> PrepareJoin should be rejected if tokens are already assigned
> -------------------------------------------------------------
>
>                 Key: CASSANDRA-21006
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-21006
>             Project: Apache Cassandra
>          Issue Type: Improvement
>          Components: Transactional Cluster Metadata
>            Reporter: Sam Tunnicliffe
>            Assignee: Sam Tunnicliffe
>            Priority: Normal
>             Fix For: 6.x
>
>
> Currently a {{PrepareJoin}} transform can succeed if the tokens to be 
> assigned to the joining peer already belong to another node. This is not 
> especially unsafe as the join operation itself will be rejected at the 
> {{StartJoin}} phase, but it is suboptimal as the planned operation has to 
> then be cancelled in order to unlock the ranges.



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