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Date: Thu, 15 Jan 2009 08:32:59 -0800 (PST)
From: =?utf-8?Q?Claus_K=C3=B6ll_=28JIRA=29?= <jira@apache.org>
To: dev@jackrabbit.apache.org
Subject: [jira] Commented: (JCR-1938) Thread lock with weblogic
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    [ https://issues.apache.org/jira/browse/JCR-1938?page=3Dcom.atlassian.j=
ira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D126641=
56#action_12664156 ]=20

Claus K=C3=B6ll commented on JCR-1938:
---------------------------------

hi francois
have you configured jackrabbit as j2c resource adapter and so are your runn=
ing your code maybe
inside a container transaction ?


> Thread lock with weblogic
> -------------------------
>
>                 Key: JCR-1938
>                 URL: https://issues.apache.org/jira/browse/JCR-1938
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-jca
>    Affects Versions: core 1.4.6
>         Environment: BEA JRockit 1.5.0_06 - Weblogic 9.2
>            Reporter: Francois Masurel
>
> Hello,
> We have some deadlock issues with jackrabbit 1.4.6 under weblogic 9.2.
> It seems to happen when the connection pool has reached the maximum conne=
ctions allowed.
> We have to restart weblogic to resolve the problem, it's a bit annoying.
> Actually used on our intranet, we plan to use our CMS solution based on j=
ackrabbit on an important public administration internet portal but this pr=
oblem is a showstopper for us.
> Is it a bug ? Did we miss something in our jackrabbit/weblogic configurat=
ion ?=20
> Thanx for your help.
> Thread dump excerpt :
> "[STUCK] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tun=
ing)'" id=3D13 idx=3D0x1a tid=3D24446 prio=3D1 alive, in native, blocked, d=
aemon
>     -- Blocked trying to get lock: EDU/oswego/cs/dl/util/concurrent/Write=
rPreferenceReadWriteLock$ReaderLock@0xabdd8d0[fat lock]
>     at jrockit/vm/Threads.waitForSignal(J)Z(Native Method)
>     at jrockit/vm/Locks.fatLockBlockOrSpin(ILjrockit/vm/ObjectMonitor;II)=
V(Unknown Source)[optimized]
>     at jrockit/vm/Locks.lockFat(Ljava/lang/Object;ILjrockit/vm/ObjectMoni=
tor;Z)Ljava/lang/Object;(Unknown Source)[optimized]
>     at jrockit/vm/Locks.monitorEnterSecondStage(Ljava/lang/Object;I)Ljava=
/lang/Object;(Unknown Source)[optimized]
>     at jrockit/vm/Locks.monitorEnter(Ljava/lang/Object;)Ljava/lang/Object=
;(Unknown Source)[inlined]
>     at jrockit/vm/Locks.monitorEnterForced(Ljava/lang/Object;)Z(Unknown S=
ource)[optimized]
>     at jrockit/vm/RNI.c2java(IIII)V(Native Method)
>     at jrockit/vm/Locks.monitorEnterUnmatched(Ljava/lang/Object;)V(Native=
 Method)
>     at EDU/oswego/cs/dl/util/concurrent/WriterPreferenceReadWriteLock$Rea=
derLock.acquire()V(Unknown Source)[optimized]
>     at org/apache/jackrabbit/core/state/DefaultISMLocking$ReadLockImpl.<i=
nit>(LEDU/oswego/cs/dl/util/concurrent/Sync;)V(DefaultISMLocking.java:103)[=
inlined]
>     at org/apache/jackrabbit/core/state/DefaultISMLocking$ReadLockImpl.<i=
nit>(LEDU/oswego/cs/dl/util/concurrent/Sync;Lorg/apache/jackrabbit/core/sta=
te/Defaul
> tISMLocking$1;)V(DefaultISMLocking.java:97)[inlined]
>     at org/apache/jackrabbit/core/state/DefaultISMLocking.acquireReadLock=
(Lorg/apache/jackrabbit/core/ItemId;)Lorg/apache/jackrabbit/core/state/ISML=
ocking$Re
> adLock;(DefaultISMLocking.java:65)[optimized]
>     at org/apache/jackrabbit/core/state/SharedItemStateManager.acquireRea=
dLock(Lorg/apache/jackrabbit/core/ItemId;)Lorg/apache/jackrabbit/core/state=
/ISMLocki
> ng$ReadLock;(SharedItemStateManager.java:1454)[inlined]
>     at org/apache/jackrabbit/core/state/SharedItemStateManager.hasItemSta=
te(Lorg/apache/jackrabbit/core/ItemId;)Z(SharedItemStateManager.java:270)[o=
ptimized]
>     at org/apache/jackrabbit/core/state/XAItemStateManager.hasItemState(L=
org/apache/jackrabbit/core/ItemId;)Z(XAItemStateManager.java:285)[optimized=
]
>     at org/apache/jackrabbit/core/state/SessionItemStateManager.hasItemSt=
ate(Lorg/apache/jackrabbit/core/ItemId;)Z(SessionItemStateManager.java:210)=
[optimize
> d]
>     at org/apache/jackrabbit/core/ItemManager.itemExists(Lorg/apache/jack=
rabbit/core/ItemId;)Z(ItemManager.java:282)[inlined]
>     at org/apache/jackrabbit/core/NodeImpl.hasProperty(Ljava/lang/String;=
)Z(NodeImpl.java:2752)[optimized]

--=20
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