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Posted to dev@jackrabbit.apache.org by "Philipp Bracher (JIRA)" <ji...@apache.org> on 2010/02/19 15:28:27 UTC
[jira] Commented: (JCR-1440) NPE Thrown when two Cluster Nodes are
hitting the same underlying database.
[ https://issues.apache.org/jira/browse/JCR-1440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12835761#action_12835761 ]
Philipp Bracher commented on JCR-1440:
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> NPE Thrown when two Cluster Nodes are hitting the same underlying database.
> ---------------------------------------------------------------------------
>
> Key: JCR-1440
> URL: https://issues.apache.org/jira/browse/JCR-1440
> Project: Jackrabbit Content Repository
> Issue Type: Bug
> Components: clustering, jackrabbit-core
> Affects Versions: 1.4, core 1.4.1
> Environment: Vista JDK 1.5.0_12. Using Derby and Derby Client 10.1.2.1
> Reporter: Micah Whitacre
> Assignee: Jukka Zitting
> Priority: Critical
> Attachments: jackrabbit-1.5-JCR-1440.tar.gz, jcr-1440-workaround.patch, repository1.xml, SimpleJackrabbitConflictTest.java, SimpleJackRabbitTest.zip
>
>
> I've created a test that creates two repositories with clustering enabled that are backed by the same database. Using the following workflow causes a NullPointerException to be thrown.
> The workflow I'm using is:
> The root node is versioned.
> ClusterNode1 creates a versioned child node named "foo".
> The test waits to make sure the syncDelay has passed so ClusterNode2 will notice the newly created node.
> ClusterNode2 retrieves the "foo" child node and removes it.
> The test waits for the change ClusterNode1 to sync with that change.
> ClusterNode1 tries to create another new node however a NullPointerException is thrown when the it tries to checkout the rootNode.
> java.lang.NullPointerException: null values not allowed
> at org.apache.commons.collections.map.AbstractReferenceMap.put(AbstractReferenceMap.java:251)
> at org.apache.jackrabbit.core.version.VersionManagerImpl.getItem(VersionManagerImpl.java:280)
> at org.apache.jackrabbit.core.version.XAVersionManager.getItem(XAVersionManager.java:334)
> at org.apache.jackrabbit.core.version.AbstractVersionManager.getVersion(AbstractVersionManager.java:87)
> at org.apache.jackrabbit.core.NodeImpl.getBaseVersion(NodeImpl.java:3198)
> at org.apache.jackrabbit.core.NodeImpl.checkout(NodeImpl.java:2991)
> at com.cerner.system.configuration.repository.jcr.SimpleJackrabbitConflictTest.testNullPointerExceptionThrown(SimpleJackrabbitConflictTest.java:96)
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