[
https://issues.apache.org/jira/browse/HBASE-7902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13587883#comment-13587883
]
Jean-Marc Spaggiari commented on HBASE-7902:
--------------------------------------------
Sorry, I'm replying a bit late, but for this situation:
Hfile 1:
Put(ts = 2)
Hfile 2:
Put(ts = 4)
Delete(ts = 2)
Delete(ts = 1)
Hfile 3:
Put(ts = 1)
When we compact the 2 HFile, maybe we can "simply" keep the last Delete (if
any) instead of removing it? It will still be a useful compaction since it will
remove a lot, and it will not break the logic for the coming Hfile3?
> 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,
> HBASE-7902-v1.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.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
