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https://issues.apache.org/jira/browse/CASSANDRA-18451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CASSANDRA-18451:
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Labels: pull-request-available (was: )
> CEP-15: (C*) Improve the chaos generation for Burn Tests: slow/flakey
> connections and dropped messages
> ------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-18451
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18451
> Project: Cassandra
> Issue Type: Improvement
> Components: Accord
> Reporter: David Capwell
> Assignee: David Capwell
> Priority: Normal
> Labels: pull-request-available
> Fix For: NA
>
>
> Burn test should be enhanced to add the following:
> 1) message dropping from one node to another (this is different than the
> current partition set logic in accord.impl.basic.Cluster#partitionSet)
> 2) for messages with callbacks, trigger failure case
> 3) redundant message delivery
> Related work:
> * Simulator’s
> org.apache.cassandra.simulator.systems.SimulatedAction#applyToMessage
> - Figures out what delivery action to perform via
> org.apache.cassandra.simulator.FutureActionScheduler#shouldDeliver
> -- timeout if dropPartition[from] != dropPartition[to] // either to/from is
> in drop partition, but not both
> -- config asked to override and deliver
> -- 50/50 chance to deliver, after that 50/50 to deliver w/ timeout, after
> that cause a failure
> - in C* failure is an enum with Timeout and Unknown
> - knows the schedule time and the message expire time, and can promote a
> DELIVER event to DELIVER_AND_TIMEOUT
> - triggers the timeout
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