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  1. Apache Drill
  2. DRILL-7509

Incorrect TupleSchema is created for DICT column when querying Parquet files

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.16.0
    • Fix Version/s: 1.18.0
    • Component/s: None
    • Labels:

      Description

      When DICT column is queried from Parquet file, its TupleSchema contains nested element, e.g. `map`, itself contains `key` and `value` fields, rather than containing the `key` and `value` fields in the DICT's TupleSchema itself. The nested element, `map`, comes from the inner structure of Parquet's MAP (which corresponds to Drill's DICT) representation.

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              • Assignee:
                bohdan Bohdan Kazydub
                Reporter:
                bohdan Bohdan Kazydub
                Reviewer:
                Igor Guzenko
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                  Updated:
                  Resolved: