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Posted to dev@phoenix.apache.org by "Geoffrey Jacoby (JIRA)" <ji...@apache.org> on 2018/05/31 17:29:00 UTC

[jira] [Commented] (PHOENIX-4762) Performance regression with transactional immutable indexes

    [ https://issues.apache.org/jira/browse/PHOENIX-4762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16496890#comment-16496890 ] 

Geoffrey Jacoby commented on PHOENIX-4762:
------------------------------------------

[~jamestaylor] - does this only apply to transactional tables? 

> Performance regression with transactional immutable indexes
> -----------------------------------------------------------
>
>                 Key: PHOENIX-4762
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4762
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>            Assignee: James Taylor
>            Priority: Major
>
> The introduction of the TAL caused a performance regression with immutable indexes. Prior to the TAL, index rows would not be transaction participants so they would not take up client memory. Instead, on rollback, we re-generate the index deletes.



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