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https://issues.apache.org/jira/browse/CASSANDRA-9555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15241994#comment-15241994
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Robert Stupp commented on CASSANDRA-9555:
-----------------------------------------

+1 on the "I know what I am doing" flag.

Would it be ok to target 3.0.x? I think executing tools like sstablescrub, 
sstableupgrade (all that update/delete sstables) while C* is running is not 
intended and such an operational mistake will lead to issues on that node.

My idea to detect whether a node is running is to try to connect to 
jmx/gossip/native/thrift ports (using the config in the environment/.yaml) - if 
at least one of these ports is open, the node would be considered running.

> Don't let offline tools run while cassandra is running
> ------------------------------------------------------
>
>                 Key: CASSANDRA-9555
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9555
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Marcus Eriksson
>            Assignee: Robert Stupp
>            Priority: Minor
>             Fix For: 3.x
>
>
> We should not let offline tools that modify sstables run while Cassandra is 
> running. 



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