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Posted to issues-all@impala.apache.org by "Zoltán Borók-Nagy (Jira)" <ji...@apache.org> on 2024/08/02 07:01:00 UTC

[jira] [Commented] (IMPALA-13140) Add backend flag to disable small string optimization

    [ https://issues.apache.org/jira/browse/IMPALA-13140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17870392#comment-17870392 ] 

Zoltán Borók-Nagy commented on IMPALA-13140:
--------------------------------------------

Adding this flag could be problematic because:
 * it degrades performance
 * some code paths where we calculate buffer sizes expect strings to be smallified, therefore these code paths should be updated too
 ** to verify everything works well we'd need to run the tests with and without small string optimization

> Add backend flag to disable small string optimization
> -----------------------------------------------------
>
>                 Key: IMPALA-13140
>                 URL: https://issues.apache.org/jira/browse/IMPALA-13140
>             Project: IMPALA
>          Issue Type: Sub-task
>            Reporter: Zoltán Borók-Nagy
>            Assignee: Zoltán Borók-Nagy
>            Priority: Major
>
> We could have a backend flag that would make SmallableString::Smallify() a no-op.



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