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https://issues.apache.org/jira/browse/CASSANDRA-9244?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14512756#comment-14512756
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Rick Branson commented on CASSANDRA-9244:
-----------------------------------------

GossipingPropertyFileSnitch. The scenario is say you have NTS with RF=3, 10 
racks A-J, and range R1, which is spread across nodes A1, C1, and E1 in racks 
A, C, and E respectively. If you replace_address C1 with node E2, it will cause 
range R1 to shift to A1, E2, and some node in neither A nor E racks. A similar 
range change is achieved if you were to bootstrap with tokens-1, but the shifts 
will work properly in that case.

> replace_address is not topology-aware
> -------------------------------------
>
>                 Key: CASSANDRA-9244
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9244
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: 2.0.12
>            Reporter: Rick Branson
>
> Replaced a node with one in another rack (using replace_address) and it 
> caused improper distribution after the bootstrap was finished. It looks like 
> the ranges for the streams are not created in a way that is topology-aware. 
> This should probably either be prevented, or ideally, would work properly. 
> The use case is migrating several nodes from one rack to another.



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