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https://issues.apache.org/jira/browse/PHOENIX-6976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17805951#comment-17805951
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Istvan Toth commented on PHOENIX-6976:
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Sounds good to me.
> Add empty column discovery to ScanUtil via HRegion
> --------------------------------------------------
>
> Key: PHOENIX-6976
> URL: https://issues.apache.org/jira/browse/PHOENIX-6976
> Project: Phoenix
> Issue Type: Improvement
> Affects Versions: 5.1.3
> Reporter: Ujjawal Kumar
> Assignee: Divneet Kaur
> Priority: Minor
>
> Features like PHOENIX-6888 depend upon empty column discovery to decide
> compaction behaviour, we can add a util method to ScanUtil so that empty
> column can be discovered without going through SYSTEM.CATALOG by scanning the
> HRegion (e.g. in case of HBase level coprocessors) and searching for empty
> column
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