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From "Matt McCline (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-13178) Enhance ORC Schema Evolution to handle more standard data type conversions
Date Fri, 29 Apr 2016 01:19:12 GMT

     [ https://issues.apache.org/jira/browse/HIVE-13178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matt McCline updated HIVE-13178:
--------------------------------
    Status: Patch Available  (was: In Progress)

> Enhance ORC Schema Evolution to handle more standard data type conversions
> --------------------------------------------------------------------------
>
>                 Key: HIVE-13178
>                 URL: https://issues.apache.org/jira/browse/HIVE-13178
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive, ORC
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>            Priority: Critical
>         Attachments: HIVE-13178.01.patch, HIVE-13178.02.patch, HIVE-13178.03.patch, HIVE-13178.04.patch,
HIVE-13178.05.patch, HIVE-13178.06.patch, HIVE-13178.07.patch, HIVE-13178.08.patch, HIVE-13178.09.patch,
HIVE-13178.091.patch, HIVE-13178.092.patch, HIVE-13178.093.patch
>
>
> Currently, SHORT -> INT -> BIGINT is supported.
> Handle ORC data type conversions permitted by Implicit conversion allowed by TypeIntoUtils.implicitConvertible
method.
>    *   STRING_GROUP -> DOUBLE
>    *   STRING_GROUP -> DECIMAL
>    *   DATE_GROUP -> STRING
>    *   NUMERIC_GROUP -> STRING
>    *   STRING_GROUP -> STRING_GROUP
>    *
>    *   // Upward from "lower" type to "higher" numeric type:
>    *   BYTE -> SHORT -> INT -> BIGINT -> FLOAT -> DOUBLE -> DECIMAL



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