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https://issues.apache.org/jira/browse/HBASE-27686?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Beaudreault updated HBASE-27686:
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Fix Version/s: 2.6.0
3.0.0-beta-2
> Recovery of BucketCache and Prefetched data after RS Crash
> ----------------------------------------------------------
>
> Key: HBASE-27686
> URL: https://issues.apache.org/jira/browse/HBASE-27686
> Project: HBase
> Issue Type: Improvement
> Components: BucketCache
> Reporter: Shanmukha Haripriya Kota
> Assignee: Shanmukha Haripriya Kota
> Priority: Major
> Fix For: 2.6.0, 3.0.0-beta-2
>
>
> HBASE-27313 introduced the ability to persist a list of hfiles for which
> prefetch has already been completed, so the we can avoid prefetching those
> files again in the event of a graceful restart, but it doesn't cover crash
> scenarios, as if the RS is killed or abnormally stopped, the list wouldn't be
> saved.
> This change aims to persist the list of already prefetched from a background
> thread that periodically checks cache state and persists the list if updates
> have happened.
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