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Posted to issues@hbase.apache.org by "Wellington Chevreuil (Jira)" <ji...@apache.org> on 2022/09/08 11:58:00 UTC
[jira] [Commented] (HBASE-27313) Persist list of Hfiles names for which prefetch is done
[ https://issues.apache.org/jira/browse/HBASE-27313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17601778#comment-17601778 ]
Wellington Chevreuil commented on HBASE-27313:
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Had merged the PR into master branch. Tried cherry-picking it to branch-2, but there are some compilation failures for both TestPrefetchRSClose and TestPrefetchPersistence. TestPrefetchPersistence errors were easy to fix, just a name change on the HBaseTestUtil, but TestPrefetchRSClose seems to rely on some classes that don't exist nor have any equivalent in branch-2: SingleProcessHBaseCluster and StartTestingClusterOption. [~skota@cloudera.com] , could you create a branch-2 compatible PR?
> Persist list of Hfiles names for which prefetch is done
> -------------------------------------------------------
>
> Key: HBASE-27313
> URL: https://issues.apache.org/jira/browse/HBASE-27313
> Project: HBase
> Issue Type: Improvement
> Components: BucketCache
> Affects Versions: 3.0.0-alpha-3
> Reporter: Shanmukha Haripriya Kota
> Assignee: Shanmukha Haripriya Kota
> Priority: Major
> Fix For: 3.0.0-alpha-4
>
>
> Persist list of Hfiles names for which prefetch is completed when persist for in-memory bucket cache mapping state is enabled.
> We need to persist the Set, which contains a list of all the HFiles for which the prefetch has completed along with the In-memory state of the bucket cache so that when we restart and if any prefetch is scheduled again for the same HFile and we already have the in-memory state retrieved, we can skip the prefetch for it.
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