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https://issues.apache.org/jira/browse/DRILL-7509?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bohdan Kazydub updated DRILL-7509:
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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.
> Incorrect TupleSchema is created for DICT column when querying Parquet files
> ----------------------------------------------------------------------------
>
> Key: DRILL-7509
> URL: https://issues.apache.org/jira/browse/DRILL-7509
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Bohdan Kazydub
> Priority: Major
>
> 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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