Hi,
I have written a very simple performance test for Jackrabbit that
creates 10 threads each saving 1000 simple one-property nodes to the
repository.
When I run the test, an exception is thrown:
javax.jcr.ItemNotFoundException:
0cada011-dc27-4531-bfcc-e8dde67532d9/{http://www.jcp.org/jcr/1.0}primaryType
at
org.apache.jackrabbit.core.ItemManager.createItemInstance(ItemManager.java:464)
at org.apache.jackrabbit.core.ItemManager.getItem(ItemManager.java:320)
at
org.apache.jackrabbit.core.ItemImpl.restoreTransientItems(ItemImpl.java:708)
at org.apache.jackrabbit.core.ItemImpl.save(ItemImpl.java:1208)
at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:805)
When I reduce the thread count to 1, the program completes with no
problem so the problem should be that I am using the JCR API
incorrectly. Could someone please show me how can I fix the sample
program so that it works correctly?
Regards,
Behi
The Code:
--- --- --- ---
/*
* Created by Behrang Saeedzadeh
* on Sep 29, 2006 @ 5:30:34 PM
*/
package org.behrang.practice.jsr170;
import org.apache.jackrabbit.core.TransientRepository;
import javax.jcr.*;
import java.util.ArrayList;
import java.util.List;
/**
* @author Behrang Saeedzadeh
*/
public class Main {
public static void main(String[] args) throws Exception {
final int THREAD_COUNT = 10;
Repository rep = new TransientRepository();
List<Session> sessions = new ArrayList<Session>(THREAD_COUNT);
Session s = rep.login(new SimpleCredentials("username",
"password".toCharArray()));
s.getRootNode().addNode("positions").remove();
s.getRootNode().addNode("positions");
s.save();
s.logout();
for (int i = 0; i < THREAD_COUNT; i++) {
Session sess = rep.login(new SimpleCredentials("User " +
(i + 1), "password".toCharArray()));
sessions.add(sess);
}
for (Session sess : sessions) {
new Thread(new UserThread(sess)).start();
}
}
}
class UserThread implements Runnable {
private Session session;
private long start;
private long end;
private String user;
public UserThread(Session session) {
this.session = session;
this.user = session.getUserID();
}
public void run() {
start = System.currentTimeMillis();
try {
for (int i = 0; i < 100; i++) {
Node root = session.getRootNode();
Node positions = root.getNode("positions");
Node position = positions.addNode("position");
position.setProperty("name", user + " " + (i + 1));
}
session.save();
session.logout();
end = System.currentTimeMillis();
synchronized(System.out) {
System.out.println(user + " finished its job at " +
(end - start) / 1000d);
}
} catch (RepositoryException re) {
re.printStackTrace();
}
}
}
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--
"Science is a differential equation. Religion
is a boundary condition" - Alan Turing
Behrang Saeedzadeh
http://www.jroller.com/page/behrangsa
http://my.opera.com/behrangsa
