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Posted to issues@spark.apache.org by "Wenchen Fan (JIRA)" <ji...@apache.org> on 2019/04/08 07:15:00 UTC
[jira] [Assigned] (SPARK-27384) File source V2: Prune unnecessary
partition columns
[ https://issues.apache.org/jira/browse/SPARK-27384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan reassigned SPARK-27384:
-----------------------------------
Assignee: Gengliang Wang
> File source V2: Prune unnecessary partition columns
> ---------------------------------------------------
>
> Key: SPARK-27384
> URL: https://issues.apache.org/jira/browse/SPARK-27384
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Gengliang Wang
> Assignee: Gengliang Wang
> Priority: Major
>
> When scanning file sources, we can prune unnecessary partition columns on constructing input partitions, so that:
> 1. Reduce the data transformation from Driver to Executors
> 2. Make it easier to implement columnar batch readers, since the partition columns are already pruned.
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