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https://issues.apache.org/jira/browse/DRILL-6129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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salim achouche updated DRILL-6129:
----------------------------------
Reviewer: Aman Sinha
> Query fails on nested data type schema change
> ---------------------------------------------
>
> Key: DRILL-6129
> URL: https://issues.apache.org/jira/browse/DRILL-6129
> Project: Apache Drill
> Issue Type: Bug
> Components: Client - CLI
> Affects Versions: 1.10.0
> Reporter: salim achouche
> Assignee: salim achouche
> Priority: Minor
> Fix For: 1.13.0
>
>
> Use-Case -
> * Assume two parquet files with similar schemas except for a nested column
> * Schema file1
> ** int64 field1
> ** optional group field2
> *** optional group field2.1 (LIST)
> **** repeated group list
> ***** optional group element
> ****** optional int64 child_field
> * Schema file2
> ** int64 field1
> ** optional group field2
> *** optional group field2.1 (LIST)
> **** repeated group list
> ***** optional group element
> ****** optional group child_field
> ******* optional int64 child_field_f1
> ******* optional int64 child_field_f1
> * Essentially child_field changed from an int64 to a group of fields
>
> Observed Query Failure
> select * from <file1 and file2>;
> Error: Unexpected RuntimeException: java.lang.IllegalArgumentException: The
> field $bits$(UINT1:REQUIRED) doesn't match the provided metadata major_type {
> minor_type: MAP
> mode: REQUIRED
> Note that selecting one file at a time succeeds which seems to indicate the
> issue has to do with the schema change logic.
>
>
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