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Posted to issues@spark.apache.org by "Gengliang Wang (JIRA)" <ji...@apache.org> on 2019/04/04 06:19:00 UTC

[jira] [Created] (SPARK-27384) File source V2: Prune unnecessary partition columns

Gengliang Wang created SPARK-27384:
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             Summary: 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


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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