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From "Joydeep Sen Sarma (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-574) Hive should use ClassLoader from hadoop Configuration
Date Tue, 30 Jun 2009 18:10:47 GMT

     [ https://issues.apache.org/jira/browse/HIVE-574?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Joydeep Sen Sarma updated HIVE-574:
-----------------------------------

       Resolution: Fixed
    Fix Version/s: 0.4.0
           Status: Resolved  (was: Patch Available)

committed - thanks Zheng!

> Hive should use ClassLoader from hadoop Configuration
> -----------------------------------------------------
>
>                 Key: HIVE-574
>                 URL: https://issues.apache.org/jira/browse/HIVE-574
>             Project: Hadoop Hive
>          Issue Type: Bug
>    Affects Versions: 0.3.0, 0.3.1
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>             Fix For: 0.4.0
>
>         Attachments: HIVE-574.1.patch, HIVE-574.2.patch, HIVE-574.3.patch
>
>
> See HIVE-338.
> Hive should always use the getClassByName method from hadoop Configuration, so that we
choose the correct ClassLoader. Examples include all plug-in interfaces, including UDF/GenericUDF/UDAF,
SerDe, and FileFormats. Basically the following code snippet shows the idea:
> {code}
> package org.apache.hadoop.conf;
> public class Configuration implements Iterable<Map.Entry<String,String>>
{
>    ...
>   /**
>    * Load a class by name.
>    * 
>    * @param name the class name.
>    * @return the class object.
>    * @throws ClassNotFoundException if the class is not found.
>    */
>   public Class<?> getClassByName(String name) throws ClassNotFoundException {
>     return Class.forName(name, true, classLoader);
>   }
> {code}

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