hi przemo,
thanks for reporting this. i created a jira issue:
http://issues.apache.org/jira/browse/JCR-335
regards, toby
On 3/7/06, Przemyslaw Pakulski <[EMAIL PROTECTED]> wrote:
> Hi,
>
> Deadlock occurs, while running a very simple test, which is just trying
> to checkout/checkin node within transaction concurrently from 2 threads.
>
> Find enclosed thread dump, log and simple Java program.
> I'm using UserTransaction implementation from jackrabbit test suite.
>
> Regards
> Przemo Pakulski
> www.cognifide.com
>
>
> Full thread dump Java HotSpot(TM) Client VM (1.4.2_08-b03 mixed mode):
>
> "Thread-5" prio=5 tid=0x03054c48 nid=0x180c in Object.wait()
> [355f000..355fd8c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x1148ef20> (a
> EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock)
> at java.lang.Object.wait(Object.java:429)
> at
> EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock.acquire(Unknown
> Source)
> - locked <0x1148ef20> (a
> EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager.acquireWriteLock(SharedItemStateManager.java:1137)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager.access$200(SharedItemStateManager.java:110)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager$Update.begin(SharedItemStateManager.java:456)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager.beginUpdate(SharedItemStateManager.java:651)
> at
> org.apache.jackrabbit.core.state.XAItemStateManager.prepare(XAItemStateManager.java:150)
> at
> org.apache.jackrabbit.core.TransactionContext.prepare(TransactionContext.java:128)
> - locked <0x11565ac8> (a
> org.apache.jackrabbit.core.TransactionContext)
> at
> org.apache.jackrabbit.core.XASessionImpl.prepare(XASessionImpl.java:300)
> at
> com.oyster.mom.contentserver.jcr.transaction.JackrabbitUserTransaction.commit(JackrabbitUserTransaction.java:102)
> at
> com.oyster.mom.contentserver.jcr.transaction.JrTestDeadlock.run(JrTestDeadlock.java:97)
>
> "Thread-4" prio=5 tid=0x0303b348 nid=0x9d0 in Object.wait() [351f000..351fd8c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x1148ef20> (a
> EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock)
> at java.lang.Object.wait(Object.java:429)
> at
> EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock.acquire(Unknown
> Source)
> - locked <0x1148ef20> (a
> EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager.acquireWriteLock(SharedItemStateManager.java:1137)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager.access$200(SharedItemStateManager.java:110)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager$Update.begin(SharedItemStateManager.java:456)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager.beginUpdate(SharedItemStateManager.java:651)
> at
> org.apache.jackrabbit.core.state.XAItemStateManager.prepare(XAItemStateManager.java:150)
> at
> org.apache.jackrabbit.core.TransactionContext.prepare(TransactionContext.java:128)
> - locked <0x1156f558> (a
> org.apache.jackrabbit.core.TransactionContext)
> at
> org.apache.jackrabbit.core.XASessionImpl.prepare(XASessionImpl.java:300)
> at
> com.oyster.mom.contentserver.jcr.transaction.JackrabbitUserTransaction.commit(JackrabbitUserTransaction.java:102)
> at
> com.oyster.mom.contentserver.jcr.transaction.JrTestDeadlock.run(JrTestDeadlock.java:97)
>
> "IndexMerger" daemon prio=5 tid=0x030388b8 nid=0x1858 in Object.wait()
> [34df000..34dfd8c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x114fd280> (a
> org.apache.commons.collections.buffer.BlockingBuffer)
> at java.lang.Object.wait(Object.java:429)
> at
> org.apache.commons.collections.buffer.BlockingBuffer.remove(BlockingBuffer.java:107)
> - locked <0x114fd280> (a
> org.apache.commons.collections.buffer.BlockingBuffer)
> at
> org.apache.jackrabbit.core.query.lucene.IndexMerger.run(IndexMerger.java:235)
>
> "Thread-2" daemon prio=5 tid=0x0303a230 nid=0xe4c in Object.wait()
> [349f000..349fd8c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x114fd2e0> (a java.util.TaskQueue)
> at java.util.TimerThread.mainLoop(Timer.java:429)
> - locked <0x114fd2e0> (a java.util.TaskQueue)
> at java.util.TimerThread.run(Timer.java:382)
>
> "Thread-1" daemon prio=5 tid=0x0301b7a0 nid=0x1a00 in Object.wait()
> [345f000..345fd8c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x114f9058> (a java.util.TaskQueue)
> at java.lang.Object.wait(Object.java:429)
> at java.util.TimerThread.mainLoop(Timer.java:403)
> - locked <0x114f9058> (a java.util.TaskQueue)
> at java.util.TimerThread.run(Timer.java:382)
>
> "ObservationManager" daemon prio=5 tid=0x02ef6c50 nid=0x10d8 in Object.wait()
> [341f000..341fd8c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x114f38e0> (a
> org.apache.commons.collections.buffer.BlockingBuffer)
> at java.lang.Object.wait(Object.java:429)
> at
> org.apache.commons.collections.buffer.BlockingBuffer.remove(BlockingBuffer.java:107)
> - locked <0x114f38e0> (a
> org.apache.commons.collections.buffer.BlockingBuffer)
> at
> org.apache.jackrabbit.core.observation.ObservationManagerFactory.run(ObservationManagerFactory.java:155)
> at java.lang.Thread.run(Thread.java:534)
>
> "Signal Dispatcher" daemon prio=10 tid=0x00a05590 nid=0x1914 waiting on
> condition [0..0]
>
> "Finalizer" daemon prio=9 tid=0x00a027f8 nid=0x17a4 in Object.wait()
> [2c9f000..2c9fd8c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x113db118> (a java.lang.ref.ReferenceQueue$Lock)
> at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
> - locked <0x113db118> (a java.lang.ref.ReferenceQueue$Lock)
> at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
> at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
>
> "Reference Handler" daemon prio=10 tid=0x00a01478 nid=0x16d4 in Object.wait()
> [2c5f000..2c5fd8c]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x113db180> (a java.lang.ref.Reference$Lock)
> at java.lang.Object.wait(Object.java:429)
> at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:115)
> - locked <0x113db180> (a java.lang.ref.Reference$Lock)
>
> "main" prio=5 tid=0x0003e6f0 nid=0x1470 in Object.wait() [7f000..7fc38]
> at java.lang.Object.wait(Native Method)
> - waiting on <0x11524f10> (a
> com.oyster.mom.contentserver.jcr.transaction.JrTestDeadlock)
> at java.lang.Thread.join(Thread.java:1001)
> - locked <0x11524f10> (a
> com.oyster.mom.contentserver.jcr.transaction.JrTestDeadlock)
> at java.lang.Thread.join(Thread.java:1054)
> at
> com.oyster.mom.contentserver.jcr.transaction.JrTestDeadlock.main(JrTestDeadlock.java:33)
>
> "VM Thread" prio=5 tid=0x00a42730 nid=0x17d0 runnable
>
> "VM Periodic Task Thread" prio=10 tid=0x00a45540 nid=0x1928 waiting on
> condition
> "Suspend Checker Thread" prio=10 tid=0x00a04af8 nid=0x17ac runnable
>
> import javax.jcr.Node;
> import javax.jcr.RepositoryException;
> import javax.jcr.Session;
> import javax.jcr.SimpleCredentials;
>
> import org.apache.jackrabbit.core.RepositoryImpl;
> import org.apache.jackrabbit.core.config.RepositoryConfig;
>
> public class JrTestDeadlock extends Thread {
>
> private static final org.apache.commons.logging.Log log =
> org.apache.commons.logging.LogFactory.getLog(JrTestDeadlock.class);
>
> public static String REPOSITORY_HOME = "d:/repo/jackrabbit/";
>
> public static String REPOSITORY_CONFIG = REPOSITORY_HOME +
> "repository.xml";
>
> public static void main(String[] args) throws Exception {
>
> JrTestDeadlock test = new JrTestDeadlock(-1);
> test.startup();
>
> JrTestDeadlock tests[] = new JrTestDeadlock[2];
>
> for (int i = 0; i < tests.length; i++) {
> JrTestDeadlock x = new JrTestDeadlock(i);
> x.start();
> tests[i] = x;
> }
>
> for (int i = 0; i < tests.length; i++) {
> tests[i].join();
> }
>
> test.shutdown();
> }
>
> private static RepositoryImpl repository;
>
> private int id;
>
> public JrTestDeadlock(int i) {
> this.id = i;
> }
>
> public void startup() throws Exception {
> System.setProperty("java.security.auth.login.config",
> "c:/jaas.config");
>
> RepositoryConfig config = RepositoryConfig.create(REPOSITORY_CONFIG,
> REPOSITORY_HOME);
> repository = RepositoryImpl.create(config);
>
> Session session = repository.login(new SimpleCredentials("admin",
> "admin".toCharArray()));
> Node rootNode = session.getRootNode();
> if (!rootNode.hasNode("folder")) {
> Node folder = rootNode.addNode("folder");
> folder.addMixin("mix:versionable");
> folder.addMixin("mix:lockable");
> rootNode.save();
> }
> session.logout();
> }
>
> public void shutdown() throws RepositoryException {
> repository.shutdown();
> }
>
> public Node getFolder(Session session) throws RepositoryException {
> return session.getRootNode().getNode("folder");
> }
>
> public void run() {
> try {
> Session session = repository.login(new SimpleCredentials("admin",
> "admin".toCharArray()));
> for (int i = 0; i < 100; i++) {
> log.error("START id:" + id + ", i=" + i);
>
> boolean success = false;
>
> JackrabbitUserTransaction ut = new
> JackrabbitUserTransaction(session);
> try {
> ut.begin();
>
> Node folder = getFolder(session);
> folder.checkout();
> folder.checkin();
>
> success = true;
> log.info("SUCCESS id:" + id + ", i=" + i);
> }
> catch (Exception e) {
> log.warn("FAIL:" + id + ", i=" + i, e);
> }
> finally {
> try {
> if (success) {
> ut.commit();
> }
> else {
> ut.rollback();
> }
> }
> catch (Exception e) {
> log.fatal(e);
> }
> }
> }
> session.logout();
> }
> catch (RepositoryException e) {
> e.printStackTrace();
> }
> }
> }
>
>
> 13:46 ERROR JrTestDeadlock.run(JrTestDeadlock.java:76) - START id:0, i=0
> 13:46 ERROR JrTestDeadlock.run(JrTestDeadlock.java:76) - START id:1, i=0
> 13:46 INFO JrTestDeadlock.run(JrTestDeadlock.java:89) - SUCCESS id:0, i=0
> 13:46 INFO JrTestDeadlock.run(JrTestDeadlock.java:89) - SUCCESS id:1, i=0
> 13:46 ERROR
> org.apache.jackrabbit.core.state.XAItemStateManager.prepare(XAItemStateManager.java:156)
> - org.apache.jackrabbit.core.state.StaleItemStateException:
> 233e656f-79f8-414d-9e37-3fce865b492d/{http://www.jcp.org/jcr/1.0}isCheckedOut
> has been modified externally
> 13:46 FATAL JrTestDeadlock.run(JrTestDeadlock.java:104) -
> javax.transaction.RollbackException: Transaction rolled back: XA_ERR=104
> 13:46 ERROR JrTestDeadlock.run(JrTestDeadlock.java:76) - START id:1, i=1
> 13:46 WARN JrTestDeadlock.run(JrTestDeadlock.java:92) - FAIL:1, i=1
> ax.jcr.InvalidItemStateException: f83a830b-abbf-4ab2-8625-b9e2c4802316: the
> item does not exist anymore
> at
> org.apache.jackrabbit.core.version.XAVersion.sanityCheck(XAVersion.java:81)
> at
> org.apache.jackrabbit.core.version.XAVersion.getInternalVersion(XAVersion.java:70)
> at
> org.apache.jackrabbit.core.version.AbstractVersion.getUUID(AbstractVersion.java:107)
> at org.apache.jackrabbit.core.NodeImpl.checkout(NodeImpl.java:2759)
> at JrTestDeadlock.run(JrTestDeadlock.java:85)
> 13:46 ERROR JrTestDeadlock.run(JrTestDeadlock.java:76) - START id:1, i=2
> 13:46 INFO JrTestDeadlock.run(JrTestDeadlock.java:89) - SUCCESS id:1, i=2
> 13:51 WARN
> org.apache.jackrabbit.core.TransactionContext.run(TransactionContext.java:239)
> - Transaction rolled back because timeout expired.
>
>
>
--
-----------------------------------------< [EMAIL PROTECTED] >---
Tobias Bocanegra, Day Management AG, Barfuesserplatz 6, CH - 4001 Basel
T +41 61 226 98 98, F +41 61 226 98 97
-----------------------------------------------< http://www.day.com >---
