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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:16:40 UTC

[jira] [Resolved] (SPARK-19705) Preferred location supporting HDFS Cache for FileScanRDD

     [ https://issues.apache.org/jira/browse/SPARK-19705?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-19705.
----------------------------------
    Resolution: Incomplete

> Preferred location supporting HDFS Cache for FileScanRDD
> --------------------------------------------------------
>
>                 Key: SPARK-19705
>                 URL: https://issues.apache.org/jira/browse/SPARK-19705
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.1.0
>            Reporter: gagan taneja
>            Priority: Major
>              Labels: bulk-closed
>
> Although NewHadoopRDD and HadoopRdd considers HDFS cache while calculating preferredLocations, FileScanRDD do not take into account HDFS cache while calculating preferredLocations
> The enhancement can be easily implemented for large files where FilePartition only contains single HDFS file
> The enhancement will also result in significant performance improvement for cached hdfs partitions



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