[jboss-jira] [JBoss JIRA] (WFLY-10181) Deadlock for threads executing org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.isEqual

[Lin Gao (JIRA)]

     [ https://issues.jboss.org/browse/WFLY-10181?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lin Gao reassigned WFLY-10181:
------------------------------

    Assignee: Lin Gao  (was: Flavia Rainone)


> Deadlock for threads executing org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.isEqual
> ------------------------------------------------------------------------------------------------
>
>                 Key: WFLY-10181
>                 URL: https://issues.jboss.org/browse/WFLY-10181
>             Project: WildFly
>          Issue Type: Bug
>          Components: JCA
>    Affects Versions: 12.0.0.Final
>            Reporter: Flavia Rainone
>            Assignee: Lin Gao
>              Labels: downstream_dependency
>             Fix For: 13.0.0.Beta1
>
>
> Two or more threads hold one lock on an instance of java.util.Collections$SynchronizedMap and attempt to obtain a lock on a different instance (e.g. locks on 0x00000001d0d08bd8 and 0x00000001cea22628 in the example below)
> "thread-one" ...
> java.lang.Thread.State: BLOCKED (on object monitor)
> at java.util.Collections$SynchronizedMap.get(Collections.java:2584)
>     waiting to lock <0x00000001cea22628> (a java.util.Collections$SynchronizedMap)
>     at java.util.AbstractMap.equals(AbstractMap.java:495)
>     at java.util.Collections$SynchronizedMap.equals(Collections.java:2631)
>     locked <0x00000001d0d08bd8> (a java.util.Collections$SynchronizedMap)
>     at org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.isEqual(XAManagedConnectionFactory.java:563)
>     locked <0x00000001d0d08bd8> (a java.util.Collections$SynchronizedMap)
>     at org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.equals(XAManagedConnectionFactory.java:598)
>     at org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnectionFactory$SubjectActions.doCheck(BaseWrapperManagedConnectionFactory.java:1397)
>     at org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnectionFactory$SubjectActions.addMatchingProperties(BaseWrapperManagedConnectionFactory.java:1508)
>     at org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnectionFactory.getConnectionProperties(BaseWrapperManagedConnectionFactory.java:1135)
>     at org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.matchManagedConnections(XAManagedConnectionFactory.java:533)
>     ...
>     at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:138)
>     at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:66)
>     ...
> "thread-two" ...
> java.lang.Thread.State: BLOCKED (on object monitor)
> at java.util.Collections$SynchronizedMap.size(Collections.java:2572)
>     waiting to lock <0x00000001d0d08bd8> (a java.util.Collections$SynchronizedMap)
>     at java.util.AbstractMap.equals(AbstractMap.java:482)
>     at java.util.Collections$SynchronizedMap.equals(Collections.java:2631)
>     locked <0x00000001cea22628> (a java.util.Collections$SynchronizedMap)
>     at org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.isEqual(XAManagedConnectionFactory.java:563)
>     locked <0x00000001cea22628> (a java.util.Collections$SynchronizedMap)
>     at org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.equals(XAManagedConnectionFactory.java:598)
>     ... [same stack as thread-one above] ...
>     at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:138)
>     at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:66)
>     ...



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