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https://issues.apache.org/jira/browse/PHOENIX-5169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16805440#comment-16805440
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Chinmay Kulkarni commented on PHOENIX-5169:
-------------------------------------------

[~Jaanai] This patch is causing a compilation error for 4.x-HBase-1.3:

 

[ERROR] 
/Users/ckulkarni/os_phoenix/phoenix-core/src/it/java/org/apache/phoenix/end2end/QueryLoggerIT.java:[68,36]
 package javax.validation.constraints does not exist
[ERROR] 
/Users/ckulkarni/os_phoenix/phoenix-core/src/it/java/org/apache/phoenix/end2end/QueryLoggerIT.java:[69,36]
 package javax.validation.constraints does not exist

I believe these imports have been added by mistake and are not being used. Can 
you please put up an addendum patch and check for all branches?

> Query logger is still initialized for each query when the log level is off
> --------------------------------------------------------------------------
>
>                 Key: PHOENIX-5169
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5169
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 5.0.0
>            Reporter: jaanai
>            Assignee: jaanai
>            Priority: Major
>             Fix For: 4.14.2, 5.1
>
>         Attachments: PHOENIX-5169-master-v2.patch, 
> PHOENIX-5169-master-v3.patch, PHOENIX-5169-master-v4.patch, 
> PHOENIX-5169-master.patch, image-2019-02-28-10-05-00-518.png
>
>
> we will still invoke createQueryLogger in PhoenixStatement for each query 
> when query logger level is OFF, which has significant throughput impacts 
> under multiple threads.
> The below is jstack with the concurrent query:
> !https://gw.alicdn.com/tfscom/TB1HC3bI4TpK1RjSZFMXXbG_VXa.png|width=500,height=400!
>  



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