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https://issues.apache.org/jira/browse/DRILL-1885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14519500#comment-14519500
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Rahul Challapalli commented on DRILL-1885:
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Do you have a query which exposes this issue?
> MapVector does not maintain the right ordinal for inner vectors causing
> ordinal to child vector mapping to fail
> ---------------------------------------------------------------------------------------------------------------
>
> Key: DRILL-1885
> URL: https://issues.apache.org/jira/browse/DRILL-1885
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Data Types
> Reporter: Hanifi Gunes
> Assignee: Jacques Nadeau
> Priority: Critical
> Fix For: 0.8.0
>
>
> MapVector does not maintain the correct ordinal for inner vectors. This
> causes ordinal to child vector mapping to fail. This raises
> ClassCastException if expected and actual data types are divergent or returns
> invalid data if value vector types are the same.
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