[jira] [Commented] (SPARK-26932) Add a warning for Hive 2.1.1 ORC reader issue

["Dongjoon Hyun (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-26932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16784858#comment-16784858 ] 

Dongjoon Hyun commented on SPARK-26932:
---------------------------------------

Thank you, [~haiboself]. I added you to Apache Spark contributor group.

> Add a warning for Hive 2.1.1 ORC reader issue
> ---------------------------------------------
>
>                 Key: SPARK-26932
>                 URL: https://issues.apache.org/jira/browse/SPARK-26932
>             Project: Spark
>          Issue Type: Documentation
>          Components: Documentation
>    Affects Versions: 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.4.0
>            Reporter: Bo Hai
>            Assignee: Bo Hai
>            Priority: Minor
>             Fix For: 2.4.2, 3.0.0
>
>
> As of Spark 2.3 and Hive 2.3, both supports using apache/orc as orc writer and reader. In older version of Hive, orc reader(isn't forward-compitaient) implemented by its own.
> So Hive 2.2 and older can not read orc table created by spark 2.3 and newer which using apache/orc instead of Hive orc.
> I think we should add these information into Spark2.4 orc configuration file : https://spark.apache.org/docs/2.4.0/sql-data-sources-orc.html



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