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Date: Tue, 1 Mar 2011 08:09:36 +0000 (UTC)
From: "Carl Steinbach (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
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Subject: [jira] Updated: (HIVE-2015) Eliminate bogus Datanucleus.Plugin
 Bundle ERROR log messages
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     [ https://issues.apache.org/jira/browse/HIVE-2015?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Carl Steinbach updated HIVE-2015:
---------------------------------

    Component/s: Diagnosability

> Eliminate bogus Datanucleus.Plugin Bundle ERROR log messages
> ------------------------------------------------------------
>
>                 Key: HIVE-2015
>                 URL: https://issues.apache.org/jira/browse/HIVE-2015
>             Project: Hive
>          Issue Type: Bug
>          Components: Diagnosability, Metastore
>            Reporter: Carl Steinbach
>
> Every time I start up the Hive CLI with logging enabled I'm treated to the following ERROR log messages courtesy of DataNucleus:
> {code}
> DEBUG metastore.ObjectStore: datanucleus.plugin.pluginRegistryBundleCheck = LOG 
> ERROR DataNucleus.Plugin: Bundle "org.eclipse.jdt.core" requires "org.eclipse.core.resources" but it cannot be resolved. 
> ERROR DataNucleus.Plugin: Bundle "org.eclipse.jdt.core" requires "org.eclipse.core.runtime" but it cannot be resolved. 
> ERROR DataNucleus.Plugin: Bundle "org.eclipse.jdt.core" requires "org.eclipse.text" but it cannot be resolved.
> {code}
> Here's where this comes from:
> * The bin/hive scripts cause Hive to inherit Hadoop's classpath.
> * Hadoop's classpath includes $HADOOP_HOME/lib/core-3.1.1.jar, an Eclipse library.
> * core-3.1.1.jar includes a plugin.xml file defining an OSGI plugin
> * At startup, Datanucleus scans the classpath looking for OSGI plugins, and will attempt to initialize any that it finds, including the Eclipse OSGI plugins located in core-3.1.1.jar
> * Initialization of the OSGI plugin in core-3.1.1.jar fails because of unresolved dependencies.
> * We see an ERROR message telling us that Datanucleus failed to initialize a plugin that we don't care about in the first place.
> I can think of two options for solving this problem:
> # Rewrite the scripts in $HIVE_HOME/bin so that they don't inherit ALL of Hadoop's CLASSPATH.
> # Replace DataNucleus's NOnManagedPluginRegistry with our own implementation that does nothing.

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