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https://issues.apache.org/jira/browse/CASSANDRA-13472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16569132#comment-16569132
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Stefan Podkowinski commented on CASSANDRA-13472:
------------------------------------------------

I'd still love to have a CLI tool for just creating a dump of all collected 
events locally. But since CASSANDRA-14435, we have to use JMX for that, so a 
small Python tool will probably not be enough. 

> Diag. Events: Create event viewer tool
> --------------------------------------
>
>                 Key: CASSANDRA-13472
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13472
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Tools
>            Reporter: Stefan Podkowinski
>            Assignee: Stefan Podkowinski
>            Priority: Major
>         Attachments: diag.log
>
>
> Starting with CASSANDRA-13459 we'll be able to subscribe to events for 
> debugging and troubleshooting purposes. It would be nice to ship a basic CLI  
> tool with Cassandra that enables users to dump events as JSON to stdout. This 
> very simple tool will make use of a patched Python client driver that will 
> work with the new diagnostic events native transport support.
> Invocation will simply look something like this ./diagview event_class ... 
> See attached diag.log for example json output produced by starting and 
> stopping another node.



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