[jira] [Resolved] (SPARK-9404) UnsafeArrayData

["Reynold Xin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-9404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reynold Xin resolved SPARK-9404.
--------------------------------
       Resolution: Fixed
    Fix Version/s: 1.5.0

> UnsafeArrayData
> ---------------
>
>                 Key: SPARK-9404
>                 URL: https://issues.apache.org/jira/browse/SPARK-9404
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Reynold Xin
>            Assignee: Wenchen Fan
>             Fix For: 1.5.0
>
>
> An Unsafe-based ArrayData implementation. To begin with, we can encode data this way:
> first 4 bytes is the # elements
> then each 4 byte is the start offset of the element, unless it is negative, in which case the element is null.
> followed by the elements themselves
> For example, [10, 11, 12, 13, null, 14], internally should be represented as (each 4 bytes)
> 5, 28, 32, 36, 40, -44, 48, 10, 11, 12, 13, 0, 14



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