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https://issues.apache.org/jira/browse/TEZ-1090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13984118#comment-13984118
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Devaraj K commented on TEZ-1090:
--------------------------------
Code change looks good, can you also remove this unused variable as part of
this patch.
{code:xml}
private long initialCpuCumulativeTime;
{code}
> Micro optimization - Remove duplicate updateProcessTree() in
> TaskCounterUpdater
> -------------------------------------------------------------------------------
>
> Key: TEZ-1090
> URL: https://issues.apache.org/jira/browse/TEZ-1090
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Fix For: 0.5.0
>
> Attachments: TEZ-1090-v1.patch
>
>
> In TaskCounterUpdater, updateProcessTree() is invoked from
> initResourceCalculatorPlugin & recordInitialCpuStats. With
> ResourceCalculatorProcessTree, close to 300-500 ms is wasted in every task
> launch.
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