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https://issues.apache.org/jira/browse/HBASE-947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12646145#action_12646145
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Billy Pearson commented on HBASE-947:
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Also look at this point if we have row&column has data and then deleted and
never add a new entry to that same row
column the data says around forever if ttl is not in uses. this cause us to use
more data space and memory in the map file index.
> [Optimization] Major compaction should remove deletes as well as the deleted
> cell
> ---------------------------------------------------------------------------------
>
> Key: HBASE-947
> URL: https://issues.apache.org/jira/browse/HBASE-947
> Project: Hadoop HBase
> Issue Type: Improvement
> Reporter: Jim Kellerman
> Priority: Minor
> Fix For: 0.19.0
>
>
> Currently major compactions retains both deletes and the deleted cell. It
> should remove both.
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