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Posted to dev@orc.apache.org by "Yang Jie (Jira)" <ji...@apache.org> on 2021/01/27 06:08:00 UTC

[jira] [Created] (ORC-746) OrcMapreduceRecordReader support building ReaderImpl using incoming OrcTail

Yang Jie created ORC-746:
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             Summary: 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


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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