[jira] [Commented] (HBASE-8134) delete qualified tombstones during minor compaction

["Sergey Shelukhin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-8134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13605351#comment-13605351 ] 

Sergey Shelukhin commented on HBASE-8134:
-----------------------------------------

To improve common case (no weird TS manipulations), we can move earliest put ts calculation from compactor to policy, to consider all files for it, including the ones left out. In that case we can determine during file selection what the drop deletes cutoff is. It is safe, and in common case will allow minor compaction of oldest files to drop deletes.
                
> delete qualified tombstones during minor compaction
> ---------------------------------------------------
>
>                 Key: HBASE-8134
>                 URL: https://issues.apache.org/jira/browse/HBASE-8134
>             Project: HBase
>          Issue Type: Brainstorming
>          Components: Compaction
>    Affects Versions: 0.98.0
>            Reporter: Liang Xie
>
> see http://mail-archives.apache.org/mod_mbox/hbase-dev/201303.mbox/%3C1363284331.32934.YahooMailNeo@web140606.mail.bf1.yahoo.com%3E for previous discussion.

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