[jira] [Work started] (KAFKA-5363) Add ability to batch restore and receive restoration stats.

["Bill Bejeck (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-5363?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on KAFKA-5363 started by Bill Bejeck.
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> Add ability to batch restore and receive restoration stats.
> -----------------------------------------------------------
>
>                 Key: KAFKA-5363
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5363
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>            Reporter: Bill Bejeck
>            Assignee: Bill Bejeck
>              Labels: kip
>             Fix For: 0.11.1.0
>
>
> Currently, when restoring a state store in a Kafka Streams application, we put one key-value at a time into the store.  
> This task aims to make this recovery more efficient by creating a new interface with "restoreAll" functionality allowing for bulk writes by the underlying state store implementation.  
> The proposal will also add "beginRestore" and "endRestore" callback methods potentially used for 
>     Tracking when the bulk restoration process begins and ends.
>     Keeping track of the number of records and last offset restored.
> KIP: https://cwiki.apache.org/confluence/display/KAFKA/KIP-167%3A+Add+interface+for+the+state+store+restoration+process



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