[jira] [Commented] (HIVE-2015) Eliminate bogus Datanucleus.Plugin Bundle ERROR log messages

["Carl Steinbach (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-2015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13054291#comment-13054291 ] 

Carl Steinbach commented on HIVE-2015:
--------------------------------------

@Andy: Has the DataNucleus 3.0 release gone final yet? If not, do you have any idea when this will happen? Is there any chance that this fix will be backported to the 2.x series?

> 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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