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https://issues.apache.org/jira/browse/YARN-6289?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Huangkaixuan updated YARN-6289:
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Attachment: Results For Experiment One.docx
> yarn got little data locality
> -----------------------------
>
> Key: YARN-6289
> URL: https://issues.apache.org/jira/browse/YARN-6289
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: capacity scheduler
> Environment: Hardware configuration
> CPU: 2 x Intel(R) Xeon(R) E5-2620 v2 @ 2.10GHz /15M Cache 6-Core 12-Thread
> Memory: 128GB Memory (16x8GB) 1600MHz
> Disk: 600GBx2 3.5-inch with RAID-1
> Network bandwidth: 968Mb/s
> Software configuration
> Spark-1.6.2 Hadoop-2.7.1
> Reporter: Huangkaixuan
> Priority: Minor
> Attachments: Results For Experiment One.docx
>
>
> When I ran this experiment with both Spark and MapReduce wordcount on the
> file, I noticed that the job did not get data locality every time. It was
> seemingly random in the placement of the tasks, even though there is no other
> job running on the cluster. I expected the task placement to always be on the
> single machine which is holding the data block, but that did not happen.
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