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https://issues.apache.org/jira/browse/DL-135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15744071#comment-15744071
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Liang Xie commented on DL-135:
------------------------------

cd incubator-distributedlog ,  grep -R "System.err" .      shows all of them 
are from *Tool , *Admin , *Benchmark, distributedlog-tutorials*,  so no further 
work need to be done.

and grep -R "System.out" seems shows only one line code needs to be modified 
(all others are from Tool class or tutorials)

> Cleanup System.out and System.err usage
> ---------------------------------------
>
>                 Key: DL-135
>                 URL: https://issues.apache.org/jira/browse/DL-135
>             Project: DistributedLog
>          Issue Type: Task
>            Reporter: Sijie Guo
>              Labels: help-wanted
>
> Based on the code analysis here : 
> https://www.kiuwan.com/blog/analyzing_distributedlog_twitter-2/
> There are 272 calls to System.out and System.err usage. Most of them might 
> just come from distributedlog tool. But let's still audit the code to make 
> sure we are using System.out and System.err correctly.



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