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Posted to issues@spark.apache.org by "Gengliang Wang (JIRA)" <ji...@apache.org> on 2018/06/29 06:53:00 UTC

[jira] [Created] (SPARK-24691) Add new API `supportDataType` in FileFormat

Gengliang Wang created SPARK-24691:
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             Summary: Add new API `supportDataType` in FileFormat
                 Key: SPARK-24691
                 URL: https://issues.apache.org/jira/browse/SPARK-24691
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.3.1
            Reporter: Gengliang Wang


In [https://github.com/apache/spark/pull/21389,]  data source schema is validated. However,
 # Putting all the process logic together in `DataSourceUtils` is tricky and hard to maintain. On second thought after review, I find that the `OrcFileFormat` in hive package is not matched, so that its validation wrong.
 # `DataSourceUtils.verifyWriteSchema` and `DataSourceUtils.verifyReadSchema` is not supposed to be called in every file format. We can move them to some upper entry.

So, I propose we can add a new API `supportDataType` in FileFormat. Each file format can override the method to specify its supported/non-supported data types.

 



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