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https://issues.apache.org/jira/browse/CASSANDRA-13460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17413180#comment-17413180
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Stefan Miklosovic commented on CASSANDRA-13460:
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Hi [~spod], do you plan to work on this? I have WIP branch here (1) which is
fetching events from stores and it displays them in vtable. We plan to also
introduce a helper (mutable) vtable once CASSANDRA-16806 is in via which one
might enable / disable events conveniently from CQL shell.
If we want to survive reboot, I plan to cover that by implementing Chronicle
Queues impl, same way as it was done for FQL / Audit but that I want to cover
in a separate ticket.
(1) https://github.com/apache/cassandra/pull/1194/files
> Diag. Events: Add local persistency
> -----------------------------------
>
> Key: CASSANDRA-13460
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13460
> Project: Cassandra
> Issue Type: Sub-task
> Components: Legacy/Observability
> Reporter: Stefan Podkowinski
> Assignee: Stefan Podkowinski
> Priority: Normal
> Attachments: 0001-Add-persistency-for-events-to-system-keyspace.patch
>
>
> Some generated events will be rather less frequent but very useful for
> retroactive troubleshooting. E.g. all events related to bootstraping and
> gossip would probably be worth saving, as they might provide valuable
> insights and will consume very little resources in low quantities. Imaging if
> we could e.g. in case of CASSANDRA-13348 just ask the user to -run a tool
> like {{./bin/diagdump BootstrapEvent}} on each host, to get us a detailed log
> of all relevant events- provide a dump of all events as described in the
> [documentation|https://github.com/spodkowinski/cassandra/blob/WIP-13460/doc/source/operating/diag_events.rst].
>
> This could be done by saving events white-listed in cassandra.yaml to a local
> table. Maybe using a TTL.
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