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https://issues.apache.org/jira/browse/SPARK-5982?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen updated SPARK-5982:
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    Component/s: Spark Core

> Remove Local Read Time
> ----------------------
>
>                 Key: SPARK-5982
>                 URL: https://issues.apache.org/jira/browse/SPARK-5982
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>            Reporter: Kay Ousterhout
>            Assignee: Kay Ousterhout
>            Priority: Blocker
>
> LocalReadTime was added to TaskMetrics for the 1.3.0 release.  However, this 
> time is actually only a small subset of the local read time, because local 
> shuffle files are memory mapped, so most of the read time occurs later, as 
> data is read from the memory mapped files and the data actually gets read 
> from disk.  We should remove this before the 1.3.0 release, so we never 
> expose this incomplete info.



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