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From "Marcelo Vanzin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-3528) Reading data from file:/// should be called NODE_LOCAL not PROCESS_LOCAL
Date Fri, 11 May 2018 18:45:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-3528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Marcelo Vanzin updated SPARK-3528:
----------------------------------
    Priority: Major  (was: Critical)

> Reading data from file:/// should be called NODE_LOCAL not PROCESS_LOCAL
> ------------------------------------------------------------------------
>
>                 Key: SPARK-3528
>                 URL: https://issues.apache.org/jira/browse/SPARK-3528
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 1.1.0
>            Reporter: Andrew Ash
>            Priority: Major
>
> Note that reading from {{file:///.../pom.xml}} is called a PROCESS_LOCAL task
> {noformat}
> spark> sc.textFile("pom.xml").count
> ...
> 14/09/15 00:59:13 INFO TaskSetManager: Starting task 0.0 in stage 0.0 (TID 0, localhost,
PROCESS_LOCAL, 1191 bytes)
> 14/09/15 00:59:13 INFO TaskSetManager: Starting task 1.0 in stage 0.0 (TID 1, localhost,
PROCESS_LOCAL, 1191 bytes)
> 14/09/15 00:59:13 INFO Executor: Running task 0.0 in stage 0.0 (TID 0)
> 14/09/15 00:59:13 INFO Executor: Running task 1.0 in stage 0.0 (TID 1)
> 14/09/15 00:59:13 INFO HadoopRDD: Input split: file:/Users/aash/git/spark/pom.xml:20862+20863
> 14/09/15 00:59:13 INFO HadoopRDD: Input split: file:/Users/aash/git/spark/pom.xml:0+20862
> {noformat}
> There is an outstanding TODO in {{HadoopRDD.scala}} that may be related:
> {noformat}
>   override def getPreferredLocations(split: Partition): Seq[String] = {
>     // TODO: Filtering out "localhost" in case of file:// URLs
>     val hadoopSplit = split.asInstanceOf[HadoopPartition]
>     hadoopSplit.inputSplit.value.getLocations.filter(_ != "localhost")
>   }
> {noformat}



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