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https://issues.apache.org/jira/browse/JCR-1979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12676666#action_12676666
]
tomekdab edited comment on JCR-1979 at 2/25/09 6:40 AM:
---------------------------------------------------------------
Deadlock issue still exits. Please find the latest thread dump. It seems that
there is an issue with method hasNodeReferences() instead of
getNodeReferences() as earlier.
"http-8080-12" daemon prio=10 tid=0x0862e400 nid=0x6d48 in Object.wait()
[0x42090000..0x42091ec0]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x62e90220> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock)
at java.lang.Object.wait(Object.java:485)
at
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock.acquire(Unknown
Source)
- locked <0x62e90220> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock)
at
org.apache.jackrabbit.core.state.DefaultISMLocking$1.<init>(DefaultISMLocking.java:56)
at
org.apache.jackrabbit.core.state.DefaultISMLocking.acquireWriteLock(DefaultISMLocking.java:52)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.acquireWriteLock(SharedItemStateManager.java:1419)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.access$200(SharedItemStateManager.java:116)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.begin(SharedItemStateManager.java:547)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.beginUpdate(SharedItemStateManager.java:1058)
at
org.apache.jackrabbit.core.state.XAItemStateManager.prepare(XAItemStateManager.java:156)
at
org.apache.jackrabbit.core.TransactionContext.prepare(TransactionContext.java:154)
- locked <0x7a171418> (a org.apache.jackrabbit.core.TransactionContext)
at
org.apache.jackrabbit.core.XASessionImpl.prepare(XASessionImpl.java:324)
"http-8080-4" daemon prio=10 tid=0x088db800 nid=0x6c2b in Object.wait()
[0x401ac000..0x401adec0]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x5bec5790> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock)
at java.lang.Object.wait(Object.java:485)
at
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock.acquire(Unknown
Source)
- locked <0x5bec5790> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock)
at
org.apache.jackrabbit.core.state.DefaultISMLocking$ReadLockImpl.<init>(DefaultISMLocking.java:84)
at
org.apache.jackrabbit.core.state.DefaultISMLocking$ReadLockImpl.<init>(DefaultISMLocking.java:78)
at
org.apache.jackrabbit.core.state.DefaultISMLocking.acquireReadLock(DefaultISMLocking.java:44)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.acquireReadLock(SharedItemStateManager.java:1405)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.hasNodeReferences(SharedItemStateManager.java:350)
at
org.apache.jackrabbit.core.version.VersionItemStateProvider.hasNodeReferences(VersionItemStateProvider.java:142)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.hasNodeReferences(SharedItemStateManager.java:369)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.addReference(SharedItemStateManager.java:900)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.addReferences(SharedItemStateManager.java:885)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.updateReferences(SharedItemStateManager.java:868)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.begin(SharedItemStateManager.java:560)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.beginUpdate(SharedItemStateManager.java:1058)
at
org.apache.jackrabbit.core.state.XAItemStateManager.prepare(XAItemStateManager.java:156)
at
org.apache.jackrabbit.core.TransactionContext.prepare(TransactionContext.java:154)
- locked <0x7a180b20> (a org.apache.jackrabbit.core.TransactionContext)
at
org.apache.jackrabbit.core.XASessionImpl.prepare(XASessionImpl.java:324)
was (Author: tomekdab):
Deadlock issue still exits. Please find the latest thread dump. It seems
that there is an issue with methog hasNodeReferences() instead of
getNodeReferences() as earlier.
"http-8080-12" daemon prio=10 tid=0x0862e400 nid=0x6d48 in Object.wait()
[0x42090000..0x42091ec0]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x62e90220> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock)
at java.lang.Object.wait(Object.java:485)
at
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock.acquire(Unknown
Source)
- locked <0x62e90220> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock)
at
org.apache.jackrabbit.core.state.DefaultISMLocking$1.<init>(DefaultISMLocking.java:56)
at
org.apache.jackrabbit.core.state.DefaultISMLocking.acquireWriteLock(DefaultISMLocking.java:52)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.acquireWriteLock(SharedItemStateManager.java:1419)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.access$200(SharedItemStateManager.java:116)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.begin(SharedItemStateManager.java:547)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.beginUpdate(SharedItemStateManager.java:1058)
at
org.apache.jackrabbit.core.state.XAItemStateManager.prepare(XAItemStateManager.java:156)
at
org.apache.jackrabbit.core.TransactionContext.prepare(TransactionContext.java:154)
- locked <0x7a171418> (a org.apache.jackrabbit.core.TransactionContext)
at
org.apache.jackrabbit.core.XASessionImpl.prepare(XASessionImpl.java:324)
"http-8080-4" daemon prio=10 tid=0x088db800 nid=0x6c2b in Object.wait()
[0x401ac000..0x401adec0]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x5bec5790> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock)
at java.lang.Object.wait(Object.java:485)
at
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock.acquire(Unknown
Source)
- locked <0x5bec5790> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock)
at
org.apache.jackrabbit.core.state.DefaultISMLocking$ReadLockImpl.<init>(DefaultISMLocking.java:84)
at
org.apache.jackrabbit.core.state.DefaultISMLocking$ReadLockImpl.<init>(DefaultISMLocking.java:78)
at
org.apache.jackrabbit.core.state.DefaultISMLocking.acquireReadLock(DefaultISMLocking.java:44)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.acquireReadLock(SharedItemStateManager.java:1405)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.hasNodeReferences(SharedItemStateManager.java:350)
at
org.apache.jackrabbit.core.version.VersionItemStateProvider.hasNodeReferences(VersionItemStateProvider.java:142)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.hasNodeReferences(SharedItemStateManager.java:369)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.addReference(SharedItemStateManager.java:900)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.addReferences(SharedItemStateManager.java:885)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.updateReferences(SharedItemStateManager.java:868)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.begin(SharedItemStateManager.java:560)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.beginUpdate(SharedItemStateManager.java:1058)
at
org.apache.jackrabbit.core.state.XAItemStateManager.prepare(XAItemStateManager.java:156)
at
org.apache.jackrabbit.core.TransactionContext.prepare(TransactionContext.java:154)
- locked <0x7a180b20> (a org.apache.jackrabbit.core.TransactionContext)
at
org.apache.jackrabbit.core.XASessionImpl.prepare(XASessionImpl.java:324)
> Deadlock on concurrent read & transactional write operations
> -------------------------------------------------------------
>
> Key: JCR-1979
> URL: https://issues.apache.org/jira/browse/JCR-1979
> Project: Jackrabbit Content Repository
> Issue Type: Bug
> Components: jackrabbit-core
> Affects Versions: 1.5.0
> Reporter: Przemo Pakulski
> Assignee: Jukka Zitting
> Fix For: 1.5.3
>
>
> Isuue has been introduced by resolving JCR-1755 (Transaction-safe
> versioning). This fixed changed sequence of commits, but at the same time
> order of acquiring locks has been disturbed.
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