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Posted to issues@spark.apache.org by "Wenchen Fan (JIRA)" <ji...@apache.org> on 2019/04/16 06:35:00 UTC
[jira] [Assigned] (SPARK-27448) File source V2 table provider
should be compatible with V1 provider
[ https://issues.apache.org/jira/browse/SPARK-27448?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan reassigned SPARK-27448:
-----------------------------------
Assignee: Gengliang Wang
> File source V2 table provider should be compatible with V1 provider
> -------------------------------------------------------------------
>
> Key: SPARK-27448
> URL: https://issues.apache.org/jira/browse/SPARK-27448
> Project: Spark
> Issue Type: Task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Gengliang Wang
> Assignee: Gengliang Wang
> Priority: Major
>
> In the rule `PreprocessTableCreation`, if an existing table is appended with a different provider, the action will fail.
> Currently, there are two implementations for file sources and creating a table with file source V2 will always fall back to V1 FileFormat. We should consider the following cases as valid:
> 1. Appending a table with file source V2 provider using the v1 file format
> 2. Appending a table with v1 file format provider using file source V2 format
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