[jira] [Updated] (CASSANDRA-10198) 3.0 hints should be streamed on decomission

["Marcus Eriksson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-10198?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marcus Eriksson updated CASSANDRA-10198:
----------------------------------------
    Reviewer: Aleksey Yeschenko

> 3.0 hints should be streamed on decomission
> -------------------------------------------
>
>                 Key: CASSANDRA-10198
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10198
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Aleksey Yeschenko
>            Assignee: Marcus Eriksson
>             Fix For: 3.0.0 rc1
>
>
> CASSANDRA-6230 added all the necessary pieces in the initial release, but streaming itself didn't make it in time.
> Now that hints are stored in flat files, we cannot just stream hints sstables. Instead we need to handoff hints files.
> Essentially we need to rewrite {{StorageService::streamHints}} to be CASSANDRA-6230 aware.
> {{HintMessage}} and {{HintVerbHandler}} can already handle hints targeted for other nodes (see javadoc for both, it's documented reasonably).
> {{HintsDispatcher}} also takes hostId as an argument, and can stream any hints to any nodes.
> The building blocks are all there - we just need {{StorageService::streamHints}} to pick the optimal candidate for each file and use {{HintsDispatcher}} to stream the files.



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