Cassandra tombstone dump critical
Cassandra tombstone dump - {{ $labels.cassandra_cluster }}
>>>
avg
(
{quantile="0.99"}) by (instance,cassandra_cluster,keyspace) > 100
The alert triggers when the average 99th‑percentile value of cassandra_table_tombstones_scanned for a specific instance, cassandra_cluster, and keyspace exceeds 100, indicating a high number of tombstones being scanned in that cluster.
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