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Posted to issues@impala.apache.org by "Quanlong Huang (Jira)" <ji...@apache.org> on 2022/09/09 05:27:00 UTC

[jira] [Resolved] (IMPALA-11540) Add warning logs for slow ALTER_TABLE event processing

     [ https://issues.apache.org/jira/browse/IMPALA-11540?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Quanlong Huang resolved IMPALA-11540.
-------------------------------------
    Fix Version/s: Impala 4.2.0
       Resolution: Fixed

> Add warning logs for slow ALTER_TABLE event processing
> ------------------------------------------------------
>
>                 Key: IMPALA-11540
>                 URL: https://issues.apache.org/jira/browse/IMPALA-11540
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Catalog
>            Reporter: Quanlong Huang
>            Assignee: Quanlong Huang
>            Priority: Major
>             Fix For: Impala 4.2.0
>
>
> ALTER_TABLE event could trigger full refresh on the table, which is expansive and can lead to event-processor lagging behind. We need logs to show the difference between the before and after hmsTables so we can further distinguish the cases that actully don't need a full table refresh. E.g. altering the owner don't need to reload the file metadata.



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