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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2016/08/16 05:41:22 UTC

[jira] [Created] (SPARK-17071) Fetch Parquet schema within driver-side when there is single file to touch without another Spark job

Hyukjin Kwon created SPARK-17071:
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             Summary: Fetch Parquet schema within driver-side when there is single file to touch without another Spark job
                 Key: SPARK-17071
                 URL: https://issues.apache.org/jira/browse/SPARK-17071
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.0.0
            Reporter: Hyukjin Kwon


Currently, it seems always launch a Spark distributed job to fetch and merge Parquet's schemas.

It seems we don't actually have to run another Spark job even when there is only a single file to touch (meaning without {{mergeSchema}}) but just fetch the schema within driver-side just like ORC data source is doing.




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