[jira] [Updated] (CASSANDRA-20801) Option to schedule Paxos cleanup on topology change by keyspace

["Yuqi Yan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-20801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yuqi Yan updated CASSANDRA-20801:
---------------------------------
    Summary: Option to schedule Paxos cleanup on topology change by keyspace  (was: Ratelimit repairPaxosForTopologyChange)

> Option to schedule Paxos cleanup on topology change by keyspace
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-20801
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-20801
>             Project: Apache Cassandra
>          Issue Type: Bug
>            Reporter: Yuqi Yan
>            Assignee: Yuqi Yan
>            Priority: Normal
>
> We should have some configurable rate limiting within `repairPaxosForTopologyChange`. Currently it's starting all the PaxosCleanupSessions in one go. ([https://github.com/apache/cassandra/blob/6fd1194578ca3149ce9cd9f14a8591df71c20753/src/java/org/apache/cassandra/service/ActiveRepairService.java#L1157)]
> Number of sessions created is related to (vnodes * node_count * tables) so this can go really heavy.
> Looking in the log I found something like:
> {code:java}
> /x.x.x.x:xxxx->/x.x.x.x:xxxx-SMALL_MESSAGES-a9be1f48 overloaded; dropping 0.073KiB message (queue: 132.000MiB local, 128.000MiB endpoint, 198.713MiB global){code}
> the messages were most likely from the PAXOS2_CLEANUP_REQ



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