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https://issues.apache.org/jira/browse/HIVE-5663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13827056#comment-13827056
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Owen O'Malley commented on HIVE-5663:
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+1
> Refactor ORC RecordReader to operate on direct & wrapped ByteBuffers
> --------------------------------------------------------------------
>
> Key: HIVE-5663
> URL: https://issues.apache.org/jira/browse/HIVE-5663
> Project: Hive
> Issue Type: Improvement
> Components: File Formats
> Affects Versions: 0.13.0
> Environment: Ubuntu LXC
> Reporter: Gopal V
> Assignee: Gopal V
> Labels: ORC
> Attachments: HIVE-5663.01.patch, HIVE-5663.02.patch,
> HIVE-5663.03.patch
>
>
> The current ORC RecordReader implementation assumes array structures backing
> the ByteBuffers it passes around between RecordReaderImpl and
> Compressed/Uncompressed InStream objects.
> This patch attempts to refactor those assumptions out of both classes,
> allowing the future use of direct byte buffers within ORC (as might come from
> HDFS zero-copy readers).
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