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Posted to issues@spark.apache.org by "ulysses you (Jira)" <ji...@apache.org> on 2019/11/05 01:39:00 UTC

[jira] [Created] (SPARK-29749) Add parquet scan Statistics

ulysses you created SPARK-29749:
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             Summary: Add parquet scan Statistics
                 Key: SPARK-29749
                 URL: https://issues.apache.org/jira/browse/SPARK-29749
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.4.4
            Reporter: ulysses you


With datasource v2, spark add a `SupportsReportStatistics` interface and now it only implement in `FileScan` which looks like fallback plan. 

Parquet api provide a possible that get file statistics without scan total file, so we can use the more accurate statistics instead estimate.



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