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Stefano Ortolani commented on CASSANDRA-13667:
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The cluster was serving reads/writes as usual (1 DC, 2 racks).
I have been able to reproduce it multiple times with a single drop.
Every time I could see spikes with 40/50 pending compactions. Also, `nodetool
describecluster` kept showing many nodes unreachable during the schema
propagation (settling down after 10 minutes).
The schema/tables I was dropping were those created by cassandra-reaper
(https://github.com/thelastpickle/cassandra-reaper) (keyspace with `class:
SimpleStrategy`).
All other keyspace are `class: NetworkTopologyStrategy`.
> DROP KEYSPACE or TABLE cause unrelated flushes and compactions on all tables
> ----------------------------------------------------------------------------
>
> Key: CASSANDRA-13667
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13667
> Project: Cassandra
> Issue Type: Bug
> Reporter: Stefano Ortolani
> Priority: Minor
>
> As soon as I drop a keyspace or a table, I see _all_ nodes struggling to
> acknowledge the new schema because of several flushes and compactions
> happening on _all_ keyspaces and compactions (completely unrelated to the
> dropped keyspace/table).
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