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Posted to issues@drill.apache.org by "Nate Putnam (JIRA)" <ji...@apache.org> on 2017/02/22 22:22:44 UTC

[jira] [Created] (DRILL-5292) Better Parquet handling of sparse columns

Nate Putnam created DRILL-5292:
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             Summary: Better Parquet handling of sparse columns
                 Key: DRILL-5292
                 URL: https://issues.apache.org/jira/browse/DRILL-5292
             Project: Apache Drill
          Issue Type: Improvement
          Components: Storage - Parquet
            Reporter: Nate Putnam


It appears the current implantation of ParquetRecordReader will fill in missing columns between files as a NullableIntVector. It would be better if the code could determine if that column was defined in a different file (and didn't conflict) and use the defined data type. 
 



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