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Posted to issues-all@impala.apache.org by "Quanlong Huang (Jira)" <ji...@apache.org> on 2020/10/27 04:54:00 UTC

[jira] [Updated] (IMPALA-10075) Reuse existing instances of unchanged partitions in REFRESH

     [ https://issues.apache.org/jira/browse/IMPALA-10075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Quanlong Huang updated IMPALA-10075:
------------------------------------
    Component/s: Catalog

> Reuse existing instances of unchanged partitions in REFRESH
> -----------------------------------------------------------
>
>                 Key: IMPALA-10075
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10075
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Catalog
>            Reporter: Quanlong Huang
>            Assignee: Quanlong Huang
>            Priority: Critical
>
> It's revealed by IMPALA-3127 that REFRESH will always update all partition instances (at least after IMPALA-9778). We should check if the new partition instance is the same as the original one, and only update them when needs. This reduce unneccessary catalog updates.



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