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https://issues.apache.org/jira/browse/KAFKA-5363?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guozhang Wang resolved KAFKA-5363.
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Resolution: Fixed
Issue resolved by pull request 3325
[https://github.com/apache/kafka/pull/3325]
> 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: 1.0.0
>
>
> 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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