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https://issues.apache.org/jira/browse/PHOENIX-5971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17141658#comment-17141658
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Chao Wang commented on PHOENIX-5971:
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@[~skadam] ,[~stoty],  please see this issues, I think this effect large.

> Triple performance reduction of delete operation from 4.4.0 Upgrade to 4.13.1
> -----------------------------------------------------------------------------
>
>                 Key: PHOENIX-5971
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5971
>             Project: Phoenix
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 4.13.1
>         Environment: 200+ node
>            Reporter: Chao Wang
>            Assignee: Chao Wang
>            Priority: Major
>
> phoenix from 4.4.0 Upgrade to 4.13.1 in my environmental, delete operation 
> triple performance reduction. for example a sql (delete  ...  from ...) will 
> delete million of data, and then hundreds of concurrent. 



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