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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2019/05/09 21:55:00 UTC
[jira] [Assigned] (SPARK-27668) File source V2: support reporting
statistics
[ https://issues.apache.org/jira/browse/SPARK-27668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-27668:
------------------------------------
Assignee: Apache Spark
> File source V2: support reporting statistics
> --------------------------------------------
>
> Key: SPARK-27668
> URL: https://issues.apache.org/jira/browse/SPARK-27668
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Gengliang Wang
> Assignee: Apache Spark
> Priority: Major
>
> In File source V1, the statistics of `HadoopFsRelation` is `compressionFactor * sizeInBytesOfAllFiles`.
> To follow it, we can implement the interface SupportsReportStatistics in FileScan and report the same statistics.
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