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https://issues.apache.org/jira/browse/HBASE-8770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13815214#comment-13815214
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Sergey Shelukhin commented on HBASE-8770:
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Between-file conflicts can be resolved using file seqids.
When we write one file (flush/compaction), we can write seqids only for
conflicting keys (row+cf+q+ts). Should be relatively small load. We already
have space for mvcc in KV and [~enis] purports to merge mvcc and seqId. Or we
can store it in tags.
> deletes and puts with the same ts should be resolved according to mvcc/seqNum
> -----------------------------------------------------------------------------
>
> Key: HBASE-8770
> URL: https://issues.apache.org/jira/browse/HBASE-8770
> Project: HBase
> Issue Type: Brainstorming
> Reporter: Sergey Shelukhin
>
> This came up during HBASE-8721. Puts with the same ts are resolved by seqNum.
> It's not clear why deletes with the same ts as a put should always mask the
> put, rather than also being resolve by seqNum.
> What do you think?
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