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Posted to issues@spark.apache.org by "Wenchen Fan (JIRA)" <ji...@apache.org> on 2016/12/24 15:34:58 UTC
[jira] [Resolved] (SPARK-18943) Avoid per-record type dispatch in
CSV when reading
[ https://issues.apache.org/jira/browse/SPARK-18943?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan resolved SPARK-18943.
---------------------------------
Resolution: Fixed
Assignee: Hyukjin Kwon
Fix Version/s: 2.2.0
> Avoid per-record type dispatch in CSV when reading
> --------------------------------------------------
>
> Key: SPARK-18943
> URL: https://issues.apache.org/jira/browse/SPARK-18943
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Hyukjin Kwon
> Assignee: Hyukjin Kwon
> Fix For: 2.2.0
>
>
> This is similar with https://issues.apache.org/jira/browse/SPARK-16434
> {{CSVRelation.csvParser}} does type dispatch for each value in each row.
> We can prevent this because the schema is already kept in {{CSVRelation}}.
> So, converters can be created first according to the schema, and then apply them to each.
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