You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "zhengruifeng (Jira)" <ji...@apache.org> on 2019/10/12 14:27:00 UTC
[jira] [Assigned] (SPARK-29380) RFormula avoid repeated 'first'
jobs to get vector size
[ https://issues.apache.org/jira/browse/SPARK-29380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
zhengruifeng reassigned SPARK-29380:
------------------------------------
Assignee: zhengruifeng
> RFormula avoid repeated 'first' jobs to get vector size
> -------------------------------------------------------
>
> Key: SPARK-29380
> URL: https://issues.apache.org/jira/browse/SPARK-29380
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 3.0.0
> Reporter: zhengruifeng
> Assignee: zhengruifeng
> Priority: Minor
>
> In current impl, {{RFormula}} will trigger one {{first}} job to get the vector size, if the size can not be obtained from {{AttributeGroup.}}
> {{This can be optimized by get the first row lazily, and reuse it for each vector column.}}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org