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https://issues.apache.org/jira/browse/ORC-746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17273024#comment-17273024
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Dongjoon Hyun commented on ORC-746:
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Thank you for filing a JIRA, [~LuciferYang].
> OrcMapreduceRecordReader support building ReaderImpl using incoming OrcTail
> ---------------------------------------------------------------------------
>
> Key: ORC-746
> URL: https://issues.apache.org/jira/browse/ORC-746
> Project: ORC
> Issue Type: Improvement
> Reporter: Yang Jie
> Priority: Major
>
> SPARK-33449 discusses adding file meta cache mechanism for Spark SQL to
> reduce data reading and speed up query.
> For the scenarios that need to use OrcMapreduceRecordReader, we hope to add
> an interface to support passing an existing OrcTail or FileMetadata to
> OrcFile and use this instance to build ReaderImpl.
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