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https://issues.apache.org/jira/browse/HADOOP-17295?focusedWorklogId=494283&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-494283
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ASF GitHub Bot logged work on HADOOP-17295:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 03/Oct/20 13:39
            Start Date: 03/Oct/20 13:39
    Worklog Time Spent: 10m 
      Work Description: coder-chenzhi opened a new pull request #2358:
URL: https://github.com/apache/hadoop/pull/2358


   I find some cases where some pre-processing statements dedicated to logging 
calls are not guarded by existing logging guards. Most of them are easy to fix. 
And I create this PR to fix them.
   
   These issues are detected by a static analysis tool wrote by myself. This 
tool can extract all the dedicated statements for each debug-logging calls 
(i.e., the results of these statements are only used by debug-logging calls). 
Because I realize that debug logs will incur overhead in production, such as 
string concatenation and method calls in the parameters of logging calls. And I 
want to perform a systematic evaluation for the overhead of debugging logging 
calls in production.


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 494283)
    Remaining Estimate: 0h
            Time Spent: 10m

> Move dedicated pre-logging statements into existing logging guards
> ------------------------------------------------------------------
>
>                 Key: HADOOP-17295
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17295
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Chen Zhi
>            Priority: Minor
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> I find some cases where some pre-processing statements dedicated to logging 
> calls are not guarded by existing logging guards. Most of them are easy to 
> fix. And I create a PR to fix them.
> These issues are detected by a static analysis tool wrote by myself. This 
> tool can extract all the dedicated statements for each debug-logging calls 
> (i.e., the results of these statements are only used by debug-logging calls). 
> Because I realize that debug logs will incur overhead in production, such as 
> string concatenation and method calls in the parameters of logging calls. And 
> I want to perform a systematic evaluation for the overhead of debugging 
> logging calls in production.



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