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https://issues.apache.org/jira/browse/HBASE-7519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14725764#comment-14725764
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Sergey Shelukhin commented on HBASE-7519:
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It appears that this has been abandoned. Stripe compaction (which are supposed
to be better for most HBase scenarios than level) never became very popular,
although some people use them. There are some subtle difficulties about doing
level compactions correctly in HBase (some discussed above in comments and in
the attached files), but the infrastructure for custom compactions is in place
now, so if you want to contribute, feel free.
> Support level compaction
> ------------------------
>
> Key: HBASE-7519
> URL: https://issues.apache.org/jira/browse/HBASE-7519
> Project: HBase
> Issue Type: New Feature
> Components: Compaction
> Reporter: Jimmy Xiang
> Assignee: Sergey Shelukhin
> Attachments: level-compaction.pdf, level-compactions-notes.txt,
> level-compactions-notes.txt
>
>
> The level compaction algorithm may help HBase for some use cases, for
> example, read heavy loads (especially, just one version is used), relative
> small key space updated frequently.
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