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https://issues.apache.org/jira/browse/CASSANDRA-13475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15985121#comment-15985121
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Blake Eggleston commented on CASSANDRA-13475:
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It would also need to support repair, so it would need to be able to 
 * Mark portions of data as unrepaired, pending repair, or repaired, and 
preserve this during streaming
 * Build merkle trees (or some implementation specific data) on all or some of 
it's data in a token range


> Define pluggable storage engine API.
> ------------------------------------
>
>                 Key: CASSANDRA-13475
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13475
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: Dikang Gu
>
> In order to support pluggable storage engine, we need to define a unified 
> interface/API, which can allow us to plug in different storage engines for 
> different requirements. 
> In very high level, the storage engine interface should include APIs to:
> 1. Apply update into the engine.
> 2. Query data from the engine.
> 3. Stream data in/out to/from the engine.
> 4. Table operations, like create/drop/truncate a table, etc.
> 5. Various stats about the engine.
> I create this ticket to start the discussions about the interface.



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