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https://issues.apache.org/jira/browse/HBASE-7902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13586832#comment-13586832
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ramkrishna.s.vasudevan commented on HBASE-7902:
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Major compaction deals only with Store files.
So when we have a put/delete happened for a row but if they are in memstore,
trigger a major compaction.
Doing a scan.raw() will give me both put and delete.
But whereas when the major comapction is done after flushing the current
memstore, the we don't get that. Faced once. I thought it as expected
behaviour.
> deletes may be removed during minor compaction, in non-standard compaction
> schemes
> -----------------------------------------------------------------------------------
>
> Key: HBASE-7902
> URL: https://issues.apache.org/jira/browse/HBASE-7902
> Project: HBase
> Issue Type: Improvement
> Components: Compaction
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Priority: Minor
> Attachments: HBASE-7902-v0.patch, HBASE-7902-v0-with-7843.patch
>
>
> Deletes are only removed during major compaction now. However, in presence of
> file ordering, deletes can be removed during minor compaction too, as long as
> there's no file that is not being compacted that is older than the files that
> are.
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