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https://issues.apache.org/jira/browse/KAFKA-8333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16847071#comment-16847071
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ASF GitHub Bot commented on KAFKA-8333:
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hachikuji commented on pull request #6800: KAFKA-8333; Load high watermark
checkpoint lazily when initializing replicas
URL: https://github.com/apache/kafka/pull/6800
Currently we load the high watermark checkpoint separately for every replica
that we load. This patch makes this loading logic lazy and caches the loaded
map while a LeaderAndIsr request is being handled.
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> Load high watermark checkpoint only once when handling LeaderAndIsr requests
> ----------------------------------------------------------------------------
>
> Key: KAFKA-8333
> URL: https://issues.apache.org/jira/browse/KAFKA-8333
> Project: Kafka
> Issue Type: Bug
> Reporter: Jason Gustafson
> Assignee: Jason Gustafson
> Priority: Major
>
> Currently we reload the checkpoint file separately for every partition that
> is first initialized on the broker. It would be more efficient to do this one
> time only when we receive the LeaderAndIsr request and to reuse the state.
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