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https://issues.apache.org/jira/browse/CASSANDRA-14319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17759640#comment-17759640
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Ariel Weisberg edited comment on CASSANDRA-14319 at 8/28/23 4:46 PM:
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This seems to set {{isRebuilding}} to false when validating the input or 
failing to {{isRebuilding.compareAndSet}} as part of the {{try/catch}} that is 
introduced. Just because this thread is not able to proceed with rebuild 
doesn't mean another thread isn't still proceeding.

I think the new {{try/catch}} should be removed and the 
{{isRebuilding.compareAndSet}} should be in the existing {{try/catch}} that 
sets {{isRebuilding}} to {{false}} if actually doing the rebuild fails.


was (Author: aweisberg):
This seems to set `isRebuilding` to false when validating the input or failing 
to `isRebuilding.compareAndSet` as part of the `try/catch` that is introduced. 
Just because this thread is not able to proceed with rebuild doesn't mean 
another thread isn't still proceeding.

I think the new `try/catch` should be removed and the 
`isRebuilding.compareAndSet` should be in the existing `try/catch` that sets 
`isRebuilding` to `false` if actually doing the rebuild fails.



> nodetool rebuild from DC lets you pass invalid datacenters 
> -----------------------------------------------------------
>
>                 Key: CASSANDRA-14319
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14319
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Tool/nodetool
>            Reporter: Jon Haddad
>            Assignee: Stefan Miklosovic
>            Priority: Normal
>             Fix For: 3.0.29, 3.11.16, 4.0.10, 4.1.2, 5.0
>
>         Attachments: CASSANDRA-14319-trunk.txt
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> If you pass an invalid datacenter to nodetool rebuild, you'll get an error 
> like this:
> {code}
> Unable to find sufficient sources for streaming range 
> (3074457345618258602,-9223372036854775808] in keyspace system_distributed
> {code}
> Unfortunately, this is a rabbit hole of frustration if you are using caps for 
> your DC names and you pass in a lowercase DC name, or you just typo the DC.  
> Let's do the following:
> # Check the DC name that's passed in against the list of DCs we know about
> # If we don't find it, let's output a reasonable error, and list all the DCs 
> someone could put in.
> # Ideally we indicate which keyspaces are set to replicate to this DC and 
> which aren't



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