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https://issues.apache.org/jira/browse/YARN-8169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16442403#comment-16442403
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BELUGA BEHR commented on YARN-8169:
-----------------------------------
[~leftnoteasy]
Parameters are best for slf4j:
# Avoids double-checking the 'debug enabled' flag
# Faster than run-time String concatenation
# Less code clutter
# Produces smaller product binary (saves memory and execution cache)
https://www.slf4j.org/faq.html#logging_performance
> Review RackResolver.java
> ------------------------
>
> Key: YARN-8169
> URL: https://issues.apache.org/jira/browse/YARN-8169
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: yarn
> Affects Versions: 3.0.1
> Reporter: BELUGA BEHR
> Assignee: BELUGA BEHR
> Priority: Trivial
> Attachments: YARN-8169.1.patch
>
>
> # Use SLF4J
> # Fix some checkstyle warnings
> # Minor clean up
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