[jira] [Updated] (CASSANDRA-12485) Always require replace_address to replace existing token

["Jeremy Hanna (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-12485?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jeremy Hanna updated CASSANDRA-12485:
-------------------------------------
    Complexity: Low Hanging Fruit

> Always require replace_address to replace existing token
> --------------------------------------------------------
>
>                 Key: CASSANDRA-12485
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12485
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Legacy/Distributed Metadata
>            Reporter: Paulo Motta
>            Priority: Low
>              Labels: lhf
>
> CASSANDRA-10134 prevented replace an existing node unless {{\-Dcassandra.replace_address}} or {{\-Dcassandra.allow_unsafe_replace=true}} is specified.
> We should extend this behavior to tokens, preventing a node from joining the ring if another node with the same token already existing in the ring, unless {{\-Dcassandra.replace_address}} or {{\-Dcassandra.allow_unsafe_replace=true}} is specified in order to avoid catastrophic scenarios.
> One scenario where this can easily happen is if you replace a node with another node with a different IP, and after some time you restart the original node by mistake. The original node will then take over the tokens of the replaced node (since it has a newer gossip generation).



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

---------------------------------------------------------------------
To unsubscribe, e-mail: commits-unsubscribe@cassandra.apache.org
For additional commands, e-mail: commits-help@cassandra.apache.org