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Posted to issues@phoenix.apache.org by "Ujjawal Kumar (Jira)" <ji...@apache.org> on 2023/06/13 08:23:00 UTC

[jira] (PHOENIX-6976) Add empty column discovery to ScanUtil via HRegion

    [ https://issues.apache.org/jira/browse/PHOENIX-6976 ]


    Ujjawal Kumar deleted comment on PHOENIX-6976:
    ----------------------------------------

was (Author: ukumar):
> If we really want to avoid accessing Sysycat, we could just add this information as a table property.

> 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
>            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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