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Posted to dev@phoenix.apache.org by "Lars Hofhansl (Jira)" <ji...@apache.org> on 2020/08/31 17:37:00 UTC

[jira] [Updated] (PHOENIX-6115) Avoid scanning prior row state for uncovered local indexes on immutable tables.

     [ https://issues.apache.org/jira/browse/PHOENIX-6115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl updated PHOENIX-6115:
-----------------------------------
    Description: 
Looking at the code I realized that we retrieve the prior row state even when is not necessary.

Specifically it is not necessary when (a) the table is immutable and (b) the indexes does not include any covered columns.

> Avoid scanning prior row state for uncovered local indexes on immutable tables.
> -------------------------------------------------------------------------------
>
>                 Key: PHOENIX-6115
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-6115
>             Project: Phoenix
>          Issue Type: Improvement
>            Reporter: Lars Hofhansl
>            Priority: Major
>
> Looking at the code I realized that we retrieve the prior row state even when is not necessary.
> Specifically it is not necessary when (a) the table is immutable and (b) the indexes does not include any covered columns.



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