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https://issues.apache.org/jira/browse/ARROW-246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Deneche A. Hakim reassigned ARROW-246:
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Assignee: Deneche A. Hakim
> [Java] UnionVector doesn't call allocateNew() when creating it's vectorType
> ---------------------------------------------------------------------------
>
> Key: ARROW-246
> URL: https://issues.apache.org/jira/browse/ARROW-246
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java - Vectors
> Reporter: Deneche A. Hakim
> Assignee: Deneche A. Hakim
>
> UnionVector uses a UINT1Vector to store the types of every value in the
> vector., but it doesn't call allocateNew() on that vector. When we call
> setSafe() the 1st time (e.g. from PromotableVector.promoteToUnion()) it will
> re-allocate the vector but will fail to properly set it's content to 0. This
> can cause various failures when we try to access the value/type stored in the
> vector.
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