NPE when clustered JR queries version history on a node that has just had a
version added by another JR in the same cluster
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Key: JCR-1670
URL: https://issues.apache.org/jira/browse/JCR-1670
Project: Jackrabbit
Issue Type: Bug
Components: clustering
Affects Versions: core 1.4.3
Environment: Windows XP servers, JDK 1.5.2.02, in process. Microsoft
SQL 2005 bundled persistence manager, datastore.
Reporter: Brett Connor
Priority: Critical
Two computers A and B running jboss webapp, including in-process Jackrabbit
instances in a cluster.
- A checks out a versioned node, then checks it in and unlocks it
- A notifies B (through a non JR mechanism) that the node has been updated
- B finds the node (by UUID) and calls getVersionHistory().getAllVersions()
This results in java.lang.NullPointerException
at
org.apache.jackrabbit.core.version.VersionIteratorImpl.addVersion(VersionIteratorImpl.java:147)
at org.apache.jackrabbit.core.version.VersionIteratorImpl.
(VersionIteratorImpl.java:68)
at
org.apache.jackrabbit.core.version.VersionHistoryImpl.getAllVersions(VersionHistoryImpl.java:95)
The addVersion() method is synchronized, but looks like it's reading a null
from 'successors'.
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