NPE Thrown when two Cluster Nodes are hitting the same underlying database.
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Key: JCR-1440
URL: https://issues.apache.org/jira/browse/JCR-1440
Project: Jackrabbit
Issue Type: Bug
Affects Versions: core 1.4.1, 1.4
Environment: Vista JDK 1.5.0_12. Using Derby and Derby Client 10.1.2.1
Reporter: Micah Whitacre
Priority: Critical
Attachments: 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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