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From "Navis (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-3799) Better error message if metalisteners or hookContext cannot be loaded/instantiated
Date Tue, 15 Jan 2013 11:02:13 GMT

     [ https://issues.apache.org/jira/browse/HIVE-3799?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Navis updated HIVE-3799:
------------------------

    Affects Version/s:     (was: 0.9.0)
               Status: Patch Available  (was: Open)
    
> Better error message if metalisteners or hookContext cannot be loaded/instantiated
> ----------------------------------------------------------------------------------
>
>                 Key: HIVE-3799
>                 URL: https://issues.apache.org/jira/browse/HIVE-3799
>             Project: Hive
>          Issue Type: Improvement
>          Components: Diagnosability, Logging
>            Reporter: Sudhanshu Arora
>            Assignee: Navis
>            Priority: Trivial
>         Attachments: HIVE-3799.D7719.1.patch, HIVE-3799.D7719.2.patch
>
>
> If I am not able to instantiate MetaListener or HookContext because of some dependent
class missing, the only error I get is InvocationTargetException.  MetaStoreUtils.getMetaListener
should be changed as following:
> try {
>         T listener = (T) Class.forName(
>             listenerImpl.trim(), true, JavaUtils.getClassLoader()).getConstructor(
>                 Configuration.class).newInstance(conf);
>         listeners.add(listener);
>       } catch (InvocationTargetException e) {
>         throw new MetaException("Failed to instantiate listener named: "+
>             listenerImpl + " reason: " + e.getCause().toString());
>       } catch (Exception e) {
>         throw new MetaException("Failed to instantiate listener named: "+
>             listenerImpl + " reason: " + e.toString());
>       }
> Similarly Driver.getHooks should be changed to handle InvocationTargetException in a
better way.

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