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https://issues.apache.org/jira/browse/ORC-58?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15379360#comment-15379360
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ASF GitHub Bot commented on ORC-58:
-----------------------------------
Github user swalkaus commented on the issue:
https://github.com/apache/orc/pull/41
I might rename "Reader" something like "FileTailReader" but, in general,
the refactoring makes sense. The schema can be read and columns metadata known
before column selection is decided.
> Move code for reading rows from Reader to RowReader
> ---------------------------------------------------
>
> Key: ORC-58
> URL: https://issues.apache.org/jira/browse/ORC-58
> Project: Orc
> Issue Type: Improvement
> Components: C++
> Reporter: Deepak Majeti
>
> Existing ReaderImpl constructor can throw an exception. This prohibits the
> creation of the reader instance and subsequent access to the schema
> information.
> For instance, an exception can be thrown if the selected column ids do not
> agree with the number of schema columns. The downstream application might
> still want the schema information for logging purposes.
> The scope of this Jira is to move the code to read rows into a new RowReader
> class.
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