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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2016/10/08 09:35:20 UTC

[jira] [Resolved] (SPARK-3600) RDD[Double] doesn't use primitive arrays for caching

     [ https://issues.apache.org/jira/browse/SPARK-3600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-3600.
------------------------------
    Resolution: Not A Problem

> RDD[Double] doesn't use primitive arrays for caching
> ----------------------------------------------------
>
>                 Key: SPARK-3600
>                 URL: https://issues.apache.org/jira/browse/SPARK-3600
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 1.1.0
>            Reporter: Xiangrui Meng
>
> RDD's classTag is not passed in through CacheManager. So RDD[Double] uses object arrays for caching, which leads to huge overhead. However, we need to send the classTag down many levels to make it work.



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