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Posted to commits@cassandra.apache.org by "Yifan Cai (Jira)" <ji...@apache.org> on 2021/12/01 17:54:00 UTC

[jira] [Commented] (CASSANDRA-17001) Optionally prune CDC segments if consumer fails to consume them fast enough

    [ https://issues.apache.org/jira/browse/CASSANDRA-17001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17451942#comment-17451942 ] 

Yifan Cai commented on CASSANDRA-17001:
---------------------------------------

Thanks [~jmckenzie] for the review. I pushed new commits to address the comments. 

> Optionally prune CDC segments if consumer fails to consume them fast enough
> ---------------------------------------------------------------------------
>
>                 Key: CASSANDRA-17001
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17001
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Local/Commit Log
>            Reporter: Dinesh Joshi
>            Assignee: Yifan Cai
>            Priority: Normal
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> Current CDC implementation blocks writes if the CDC segments have filled up. This makes sense for some use-cases. In other cases it would be beneficial for C* to prune the CDC segments if they haven't been consumed. This will prevent blocking of writes. With this change we will introduce a flag to prune CDC segments much like a circular buffer. This will prevent the writes being blocked.



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