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https://issues.apache.org/jira/browse/CASSANDRA-18555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17729996#comment-17729996
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Berenguer Blasi commented on CASSANDRA-18555:
---------------------------------------------

PR seems to be missing CI. And what was the conclusion in the ML about changing 
the output of commands? iirc they were deemed as public API and needed at least 
a ML ping (I might be misremembering...)

> A new nodetool/JMX command that tells whether node's decommission failed or 
> not
> -------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-18555
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-18555
>             Project: Cassandra
>          Issue Type: Task
>          Components: Observability/JMX
>            Reporter: Jaydeepkumar Chovatia
>            Assignee: Jaydeepkumar Chovatia
>            Priority: Normal
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Currently, when a node is being decommissioned and if any failure happens, 
> then an exception is thrown back to the caller.
> But Cassandra's decommission takes considerable time ranging from minutes to 
> hours to days. There are various scenarios in that the caller may need to 
> probe the status again:
>  * The caller times out
>  * It is not possible to keep the caller hanging for such a long time
> And If the caller does not know what happened internally, then it cannot 
> retry, etc., leading to other issues.
> So, in this ticket, I am going to add a new nodetool/JMX command that can be 
> invoked by the caller anytime, and it will return the correct status.
> It might look like a smaller change, but when we need to operate Cassandra at 
> scale in a large-scale fleet, then this becomes a bottleneck and require 
> constant operator intervention.



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