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https://issues.apache.org/jira/browse/YARN-10745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17335401#comment-17335401
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Bilwa S T commented on YARN-10745:
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Hi [~dmmkr]
Thanks for the patch. I have few minor comments
* In ProportionalCapacityPreemptionPolicy.java LOG.isDebugEnabled() check can
be removed for below log
{quote} LOG.debug("Send to scheduler: in app={} " +
"#containers-to-be-preemptionCandidates={}",
appAttemptId,
e.getValue().size());
{quote}
* Why do we need LOG.isDebugEnabled() check in AsyncDispatcher.java
Few suggestions
* In NodesListManager.java we can print below log only if either of the
sets is not empty
{quote} LOG.info("hostsReader include:\{" +StringUtils.join(",",
hostsReader.getHosts()) +"} exclude:{" +
StringUtils.join(",", hostsReader.getExcludedHosts()) + "}");
{quote}
> Change Log level from info to debug for few logs and remove unnecessary
> debuglog checks
> ---------------------------------------------------------------------------------------
>
> Key: YARN-10745
> URL: https://issues.apache.org/jira/browse/YARN-10745
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: D M Murali Krishna Reddy
> Assignee: D M Murali Krishna Reddy
> Priority: Minor
> Attachments: YARN-10745.001.patch
>
>
> Change the info log level to debug for few logs so that the load on the
> logger decreases in large cluster and improves the performance.
> Remove the unnecessary isDebugEnabled() checks for printing strings without
> any string concatenation
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