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https://issues.apache.org/jira/browse/SPARK-20560?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved SPARK-20560.
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Resolution: Invalid
"localhost" is filtered, been done in {{HadoopRDD.getPreferredLocations()}}
since commit #06aac8a.
> Review Spark's handling of filesystems returning "localhost" in
> getFileBlockLocations
> -------------------------------------------------------------------------------------
>
> Key: SPARK-20560
> URL: https://issues.apache.org/jira/browse/SPARK-20560
> Project: Spark
> Issue Type: Bug
> Components: Scheduler
> Affects Versions: 2.1.0
> Reporter: Steve Loughran
> Priority: Minor
>
> Some filesystems (S3a, Azure WASB) return "localhost" as the response to
> {{FileSystem.getFileBlockLocations(path)}}. If this is then used as the
> preferred host when scheduling work, there's a risk that work will be queued
> on one host, rather than spread across the cluster.
> HIVE-14060 and TEZ-3291 have both seen it in their schedulers.
> I don't know if Spark does it, someone needs to look at the code, maybe write
> some tests
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