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https://issues.apache.org/jira/browse/SPARK-29490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16959084#comment-16959084
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Dongjoon Hyun commented on SPARK-29490:
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Hi, [~rongma]. Thank you for reporting.
Does this only exist in 3.0.0?
> Reset 'WritableColumnVector' in 'RowToColumnarExec'
> ---------------------------------------------------
>
> Key: SPARK-29490
> URL: https://issues.apache.org/jira/browse/SPARK-29490
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Rong Ma
> Priority: Major
>
> When converting {{Iterator[InternalRow]}} to {{Iterator[ColumnarBatch]}}, the
> vectors used to create a new {{ColumnarBatch}} should be reset in the
> iterator's "next()" method.
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