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https://issues.apache.org/jira/browse/CASSANDRA-18816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17769347#comment-17769347
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David Capwell commented on CASSANDRA-18816:
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Starting commit

CI Results (pending):
||Branch||Source||Circle CI||Jenkins||
|cassandra-5.0|[branch|https://github.com/dcapwell/cassandra/tree/commit_remote_branch/CASSANDRA-18816-cassandra-5.0-B23F0227-BECF-4D24-8BAB-50909DA79982]|[build|https://app.circleci.com/pipelines/github/dcapwell/cassandra?branch=commit_remote_branch%2FCASSANDRA-18816-cassandra-5.0-B23F0227-BECF-4D24-8BAB-50909DA79982]|[build|https://ci-cassandra.apache.org/job/Cassandra-devbranch/2605/]|
|trunk|[branch|https://github.com/dcapwell/cassandra/tree/commit_remote_branch/CASSANDRA-18816-trunk-B23F0227-BECF-4D24-8BAB-50909DA79982]|[build|https://app.circleci.com/pipelines/github/dcapwell/cassandra?branch=commit_remote_branch%2FCASSANDRA-18816-trunk-B23F0227-BECF-4D24-8BAB-50909DA79982]|[build|https://ci-cassandra.apache.org/job/Cassandra-devbranch/2606/]|


> Add support for repair coordinator to retry messages that timeout
> -----------------------------------------------------------------
>
>                 Key: CASSANDRA-18816
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-18816
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Consistency/Repair
>            Reporter: David Capwell
>            Assignee: David Capwell
>            Priority: Normal
>             Fix For: 5.x
>
>          Time Spent: 12h 10m
>  Remaining Estimate: 0h
>
> Now that CASSANDRA-15399 is in, most of the repair messages have a state that 
> they can check against to make message delivery idempotent, allowing the 
> coordinator to retry such messages; a few of the most critical messages to 
> retry are: PREPARE_MSG, VALIDATION_REQ, VALIDATION_RSP, SYNC_REQ, and 
> SYNC_RSP.
> With this I propose making the coordinator able to retry these key messages 
> to try and make repair more resilient to ephemeral issues.



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