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https://issues.apache.org/jira/browse/YARN-9863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16995073#comment-16995073
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David Mollitor commented on YARN-9863:
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[~pbacsko] Thank you for weighing in. You are correct. I do not have anything
at the correct scale to test this. The customer I am working with is using CDH
and does not have a process to patch, deploy, test, in production.
I think the risk is low of it causing more harm than it might benefit.
> Randomize List of Resources to Localize
> ---------------------------------------
>
> Key: YARN-9863
> URL: https://issues.apache.org/jira/browse/YARN-9863
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: nodemanager
> Reporter: David Mollitor
> Assignee: David Mollitor
> Priority: Minor
> Attachments: YARN-9863.1.patch, YARN-9863.2.patch
>
>
> https://github.com/apache/hadoop/blob/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/main/java/org/apache/hadoop/mapreduce/v2/util/LocalResourceBuilder.java
> Add a new parameter to {{LocalResourceBuilder}} that allows the list of
> resources to be shuffled randomly. This will allow the Localizer to spread
> the load of requests so that not all of the NodeManagers are requesting to
> localize the same files, in the same order, from the same DataNodes,
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