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Posted to issues@spark.apache.org by "Wenchen Fan (JIRA)" <ji...@apache.org> on 2018/09/11 14:24:00 UTC

[jira] [Resolved] (SPARK-16412) Generate Java code that gets an array in each column of CachedBatch when DataFrame.cache() is called

     [ https://issues.apache.org/jira/browse/SPARK-16412?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-16412.
---------------------------------
    Resolution: Won't Fix

> Generate Java code that gets an array in each column of CachedBatch when DataFrame.cache() is called
> ----------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-16412
>                 URL: https://issues.apache.org/jira/browse/SPARK-16412
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Kazuaki Ishizaki
>            Priority: Major
>
> Once SPARK-14098 is merged, we will migrate a feature in this JIRA entry.
> When DataFrame.cache() is called, data is stored as column-oriented storage in CachedBatch. The current Catalyst generates Java program to get an array in a column from an InternalRow that is copied from CachedBatch. This JIRA entry generates Java code to directly get the array in a column from CachedBatch without copy. This JIRA entry supports an array (ArrayType in Spark).



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