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Posted to dev@phoenix.apache.org by "Istvan Toth (Jira)" <ji...@apache.org> on 2023/05/31 09:51:00 UTC

[jira] [Created] (PHOENIX-6965) UngroupedAggregateRegionScanner.insertEmptyKeyValue() generates too many cells

Istvan Toth created PHOENIX-6965:
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             Summary: UngroupedAggregateRegionScanner.insertEmptyKeyValue() generates too many cells
                 Key: PHOENIX-6965
                 URL: https://issues.apache.org/jira/browse/PHOENIX-6965
             Project: Phoenix
          Issue Type: Bug
          Components: core
    Affects Versions: 5.1.3, 5.2.0
            Reporter: Istvan Toth
            Assignee: Istvan Toth


UngroupedAggregateRegionScanner.insertEmptyKeyValue() is supposed to generate one empty cell for each timestmap.
However, it never adds the generated timestamp to the controll map, and generated an empty cell for each existing cell.
IIRC, these are all set to the the RS an d to WAL, and are only consolidated in the memstore, leading to a lot of wasted cpu, memory, io, and network resources.



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