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https://issues.apache.org/jira/browse/CASSANDRA-18816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17763282#comment-17763282
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Caleb Rackliffe commented on CASSANDRA-18816:
---------------------------------------------
First pass at review complete. I've left some bits in the PR, we've had some
offline conversation as well, and there are some remaining TODOs. My plan is to
try to slap a final +1 on this early next week when those are all resolved to
our liking.
> 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: 1h 50m
> 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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