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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/06/14 03:34:00 UTC

[jira] [Commented] (SPARK-8354) Fix off-by-factor-of-8 error when allocating scratch space in UnsafeFixedWidthAggregationMap

    [ https://issues.apache.org/jira/browse/SPARK-8354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14584908#comment-14584908 ] 

Apache Spark commented on SPARK-8354:
-------------------------------------

User 'JoshRosen' has created a pull request for this issue:
https://github.com/apache/spark/pull/6809

> Fix off-by-factor-of-8 error when allocating scratch space in UnsafeFixedWidthAggregationMap
> --------------------------------------------------------------------------------------------
>
>                 Key: SPARK-8354
>                 URL: https://issues.apache.org/jira/browse/SPARK-8354
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Josh Rosen
>            Assignee: Josh Rosen
>
> UnsafeFixedWidthAggregationMap contains an off-by-factor-of-8 error when allocating row conversion scratch space: we take a size requirement, measured in bytes, then allocate a long array of that size.  This means that we end up allocating 8x too much conversion space.



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