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Posted to issues@spark.apache.org by "Enrico Minack (Jira)" <ji...@apache.org> on 2022/03/24 15:54:00 UTC
[jira] [Updated] (SPARK-38647) Add SupportsReportOrdering mix in interface for Scan
[ https://issues.apache.org/jira/browse/SPARK-38647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Enrico Minack updated SPARK-38647:
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Description:
As {{SupportsReportPartitioning}} allows implementations of {{Scan}} provide Spark with information about the exiting partitioning of data read by a {{{}DataSourceV2{}}}, a similar mix in interface {{SupportsReportOrdering}} should provide order information.
This prevents Spark from sorting data if they already exhibit a certain order provided by the source.
was:
As {{SupportsReportPartitioning}} allows implementations of {{Scan}} provide Spark with information about the exiting partitioning of data read by a {{DataSourceV2}}, a similar mix in interface {{SupportsReportOrdering}} should provide order information.
This prevents Spark from sorting data if they exhibit a certain order provided by the source.
> Add SupportsReportOrdering mix in interface for Scan
> ----------------------------------------------------
>
> Key: SPARK-38647
> URL: https://issues.apache.org/jira/browse/SPARK-38647
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: Enrico Minack
> Priority: Major
>
> As {{SupportsReportPartitioning}} allows implementations of {{Scan}} provide Spark with information about the exiting partitioning of data read by a {{{}DataSourceV2{}}}, a similar mix in interface {{SupportsReportOrdering}} should provide order information.
> This prevents Spark from sorting data if they already exhibit a certain order provided by the source.
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