[jira] [Commented] (SPARK-14098) Generate code that get a float/double value in each column from CachedBatch when DataFrame.cache() is called

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-14098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15517209#comment-15517209 ] 

Apache Spark commented on SPARK-14098:
--------------------------------------

User 'kiszk' has created a pull request for this issue:
https://github.com/apache/spark/pull/15219

> Generate code that get a float/double value in each column from CachedBatch when DataFrame.cache() is called
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-14098
>                 URL: https://issues.apache.org/jira/browse/SPARK-14098
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Kazuaki Ishizaki
>
> When DataFrame.cache() is called, data is stored as column-oriented storage in CachedBatch. The current Catalyst generates Java program to get a value of a column from an InternalRow that is translated from CachedBatch. This issue generates Java code to get a value of a column from CachedBatch. While a column for a cache may be compressed, this issue handles float and double types that are never compressed. 
> Other primitive types, whose column may be compressed, will be addressed in another entry.



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