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Posted to commits@cassandra.apache.org by "Benedict Elliott Smith (Jira)" <ji...@apache.org> on 2021/10/30 11:01:00 UTC

[jira] [Updated] (CASSANDRA-17096) CEP-15: Accord Liveness / Repair

     [ https://issues.apache.org/jira/browse/CASSANDRA-17096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benedict Elliott Smith updated CASSANDRA-17096:
-----------------------------------------------
    Summary: CEP-15: Accord Liveness / Repair  (was: CEP-15: Liveness / Repair)

> CEP-15: Accord Liveness / Repair
> --------------------------------
>
>                 Key: CASSANDRA-17096
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17096
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: Benedict Elliott Smith
>            Priority: Normal
>
> Accord requires replicas apply a consistent prefix of agreed operations, and permits many operations to be in-flight and depending on each other. These both benefit from strong liveness properties to ensure the system is always able to make rapid progress. To this end, we will introduce a gossip-like mechanism for communicating knowledge about the replication status of known transactions. Nodes will frequently reconcile their knowledge of each other’s knowledge with each other, so that the status of a transaction on other nodes can be rapidly determined.



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