[
https://issues.apache.org/jira/browse/JCR-1979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12673248#action_12673248
]
Przemo Pakulski commented on JCR-1979:
--------------------------------------
"http-8080-10" daemon prio=10 tid=0x08bb4800 nid=0x54be in Object.wait()
[0x43075000..0x430771c0]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x5c2cf4c0> (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 <0x5c2cf4c0> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock)
at
org.apache.jackrabbit.core.state.DefaultISMLocking$ReadLockImpl.<init>(DefaultISMLocking.java:78)
at
org.apache.jackrabbit.core.state.DefaultISMLocking$ReadLockImpl.<init>(DefaultISMLocking.java:72)
at
org.apache.jackrabbit.core.state.DefaultISMLocking.acquireReadLock(DefaultISMLocking.java:40)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.acquireReadLock(SharedItemStateManager.java:1403)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.getNodeReferences(SharedItemStateManager.java:317)
at
org.apache.jackrabbit.core.version.VersionItemStateProvider.getNodeReferences(VersionItemStateProvider.java:135)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.getNodeReferences(SharedItemStateManager.java:329)
at
org.apache.jackrabbit.core.state.LocalItemStateManager.getNodeReferences(LocalItemStateManager.java:202)
at
org.apache.jackrabbit.core.state.XAItemStateManager.getReferences(XAItemStateManager.java:358)
at
org.apache.jackrabbit.core.state.XAItemStateManager.hasNodeReferences(XAItemStateManager.java:321)
at
org.apache.jackrabbit.core.state.SessionItemStateManager.hasNodeReferences(SessionItemStateManager.java:222)
at org.apache.jackrabbit.core.NodeImpl.getReferences(NodeImpl.java:4639)
at org.apache.jackrabbit.core.NodeImpl.getReferences(NodeImpl.java:2890)
"http-8080-18" daemon prio=10 tid=0x08691c00 nid=0x54d0 in Object.wait()
[0x41a6c000..0x41a6dec0]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x5f1e49a0> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock)
at java.lang.Object.wait(Object.java:485)
at
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock.acquire(Unknown
Source)
- locked <0x5f1e49a0> (a
EDU.oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$WriterLock)
at
org.apache.jackrabbit.core.state.DefaultISMLocking$1.<init>(DefaultISMLocking.java:51)
at
org.apache.jackrabbit.core.state.DefaultISMLocking.acquireWriteLock(DefaultISMLocking.java:48)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.acquireWriteLock(SharedItemStateManager.java:1417)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.access$200(SharedItemStateManager.java:116)
at
org.apache.jackrabbit.core.state.SharedItemStateManager$Update.begin(SharedItemStateManager.java:545)
at
org.apache.jackrabbit.core.state.SharedItemStateManager.beginUpdate(SharedItemStateManager.java:1056)
at
org.apache.jackrabbit.core.state.XAItemStateManager.prepare(XAItemStateManager.java:149)
at
org.apache.jackrabbit.core.TransactionContext.prepare(TransactionContext.java:138)
- locked <0x72252158> (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
>
> 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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