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Posted to issues@spark.apache.org by "Kazuaki Ishizaki (JIRA)" <ji...@apache.org> on 2017/06/26 18:59:00 UTC

[jira] [Created] (SPARK-21217) Support ColumnVector.Array.toArray()

Kazuaki Ishizaki created SPARK-21217:
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             Summary: Support ColumnVector.Array.to<type>Array()
                 Key: SPARK-21217
                 URL: https://issues.apache.org/jira/browse/SPARK-21217
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.3.0
            Reporter: Kazuaki Ishizaki


When {{to<type>Array()}} in {{ColumnVector.Array}} (e.g. {{toIntArray()}}) is called, the generic method in {{ArrayData}} is called. It is not fast since element-wise copy is performed.
This JIRA entry implements bulk-copy for these methods in {{ColumnVector.Array}} by using {{System.arrayCopy()}} or {{Platform.copyMemory()}}.



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