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Posted to issues@spark.apache.org by "Gengliang Wang (Jira)" <ji...@apache.org> on 2020/01/23 23:54:00 UTC

[jira] [Created] (SPARK-30627) Disable all the V2 file sources in Spark 3.0 by default

Gengliang Wang created SPARK-30627:
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             Summary: Disable all the V2 file sources in Spark 3.0 by default
                 Key: SPARK-30627
                 URL: https://issues.apache.org/jira/browse/SPARK-30627
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Gengliang Wang
            Assignee: Gengliang Wang


There are still some missing parts in the file source V2 framework:
1. It doesn't support reporting file scan metrics such as "numOutputRows"/"numFiles"/"fileSize" like `FileSourceScanExec`. 
2. It doesn't support partition pruning with subqueries or dynamic partition pruning.

As we are going to code freeze on Jan 31st, I suggest disabling all the V2 file sources in Spark 3.0 by default.



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