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https://issues.apache.org/jira/browse/CASSANDRA-13023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16520319#comment-16520319
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Alain RODRIGUEZ commented on CASSANDRA-13023:
---------------------------------------------
I think this metric is currently available (found in 3.11.1) and was for a long
time.
It's a bit hidden though, the metric is exposed as
org.apache.cassandra.db:type=ColumnFamilies,keyspace=<keyspace>,columnfamily=<table>.
Attibute: DroppableTombstoneRatio
It would make sense to me to make it available under
org.apache.cassandra.metrics instead, but I don't know about this historical
choice, so I am missing some context.
[[email protected]], be aware that this is available meanwhile, fwiw. :)
!droppableTombstoneRatio.png!
> Add droppable tombstone metrics
> -------------------------------
>
> Key: CASSANDRA-13023
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13023
> Project: Cassandra
> Issue Type: Improvement
> Components: Observability
> Reporter: Stefan Podkowinski
> Priority: Major
> Attachments: droppableTombstoneRatio.png
>
>
> Currently it's only possible to inspect the ratio of droppable tombstones on
> sstable basis using the {{sstablemetadata}} tool. It would be very useful to
> have this information provided as part of Cassandra metrics as well, e.g. to
> get an idea on the effectiveness of tombstone eviction during compactions
> over time.
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