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https://issues.apache.org/jira/browse/CASSANDRA-4761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13473229#comment-13473229
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Alexey Zotov commented on CASSANDRA-4761:
-----------------------------------------

I've attached two files: first version of the patch and file with comments.

                
> Batch hints delivery
> --------------------
>
>                 Key: CASSANDRA-4761
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4761
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.1.2
>            Reporter: Alexey Zotov
>            Assignee: Alexey Zotov
>              Labels: hintedhandoff
>         Attachments: cassandra-1.1-4761-async_hints.txt, notices.txt
>
>
> Hints delivery to remote DC can take a long time (currently we have 70 ms for 
> each hint). In our estimates 700 MB of data (stored hints) will be 
> transmitting to remote DC more than one day (in our case), it's unacceptable 
> for us. We suggest to enter hints delivery using batch operations. 
> What do you think about it? Is there some facts that won't allow to implement 
> that mechanism?
> I'll try to implement it if you approve and clarify right way.

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