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https://issues.apache.org/jira/browse/HBASE-2453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12858084#action_12858084
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stack commented on HBASE-2453:
------------------------------
Does HBASE-2462 work as the issue for looking at performance doing deletes at
minor compaction time?
> Revisit compaction policies after HBASE-2248 commit
> ---------------------------------------------------
>
> Key: HBASE-2453
> URL: https://issues.apache.org/jira/browse/HBASE-2453
> Project: Hadoop HBase
> Issue Type: Improvement
> Reporter: Jonathan Gray
> Assignee: Jonathan Gray
> Priority: Critical
> Fix For: 0.20.4, 0.20.5, 0.21.0
>
> Attachments: HBASE-2453-v1.patch
>
>
> HBASE-2248 turned Gets into Scans server-side. It also removed the invariant
> that deletes in a file only apply to other files and not itself (no longer
> processes MemStore deletes when the delete happens). This has implications
> for our minor compaction policy.
> We are currently processing deletes during minor compactions in a way that
> makes it so we do the actual deleting as we compact, but we retain the delete
> records themselves. This makes it so we retain the invariant of deletes only
> applying to other files.
> Since this is now gone post HBASE-2248, we should revisit our compaction
> policies.
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