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https://issues.apache.org/jira/browse/PARQUET-2422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17812716#comment-17812716
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Steve Loughran commented on PARQUET-2422:
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would be nice to see an example of this, but i can appreciate the risk
> Prevent unwrapping of Hadoop filestreams
> ----------------------------------------
>
> Key: PARQUET-2422
> URL: https://issues.apache.org/jira/browse/PARQUET-2422
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-hadoop
> Reporter: Rathin Bhargava
> Priority: Major
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> While checking whether a stream is `ByteBufferReadable`, we end up unwrapping
> the stream and using the unwrapped stream object.
>
> This can cause issues if we depend on the behavior of a certain stream object.
>
> The fix is simple, we can type-check without unwrapping the filestream.
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