If I run the test below I reliably get the following exception, any
ideas, what should I be doing that I am not.
This is jackrabbit core 1.4.8
(btw jcrService performs logins into the repository, that has a
BundlePersistanceManager and a ClusterNode configuration, running on
Derby. There is no TransactionManager in this test)
javax.jcr.InvalidItemStateException: e13c3bca-2d00-4717-
af77-02c385b10351/{http://www.sakaiproject.org/CHS/jcr/jackrabbit/
1.0}test has been modified externally
at org.apache.jackrabbit.core.ItemImpl.save(ItemImpl.java:1251)
at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:897)
at org.sakaiproject.kernel.util.JcrUtilsT$1.run(JcrUtilsT.java:137)
at java.lang.Thread.run(Thread.java:613)
@Test
public void multiThreadTest() throws Exception {
Thread[] t = new Thread[20];
running = 0;
for (int i = 0; i < t.length; i++) {
t[i] = new Thread(new Runnable() {
public void run() {
running++;
Random random = new Random();
try {
for (int i = 0; i < 20; i++) {
try {
Session session = jcrService.loginSystem();
Node node = (Node) session.getItem(randomFile1);
try {
node.getProperty("sakaijcr:test").remove();
} catch (Exception e) {
}
session.save();
Thread.yield();
node.setProperty("sakaijcr:test", "new
value"+random.nextLong());
session.save();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
jcrService.logout();
} catch (Exception e) {
e.printStackTrace();
}
}
}
} finally {
running--;
}
}
});
}
for (int i = 0; i < t.length; i++) {
t[i].start();
Thread.yield();
}
while (running > 0) {
Thread.yield();
}
}
