[jira] [Commented] (SPARK-17915) Prepare ColumnVector implementation for UnsafeData

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

    [ https://issues.apache.org/jira/browse/SPARK-17915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15572747#comment-15572747 ] 

Apache Spark commented on SPARK-17915:
--------------------------------------

User 'kiszk' has created a pull request for this issue:
https://github.com/apache/spark/pull/15468

> Prepare ColumnVector implementation for UnsafeData
> --------------------------------------------------
>
>                 Key: SPARK-17915
>                 URL: https://issues.apache.org/jira/browse/SPARK-17915
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.0.0, 2.0.1
>            Reporter: Kazuaki Ishizaki
>
> Current implementations of {{ColumnarVector}} are {{OnHeapColumnarVector}} and {{OffHeapColumnarVector}}, which are optimized for reading data from Parquet. If they get an array, an map, or an struct from a {{Unsafe}} related data structure, it is inefficient.
> This JIRA prepares a new implementation {{OnHeapUnsafeColumnarVector}} that is optimized for reading data from a {{Unsafe}} related data structure.



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