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From Zhi Xie <daxie...@gmail.com>
Subject Re: ConcurrentModificationException from SinglePoolMatchAllConnectionInterceptor
Date Tue, 03 Nov 2015 08:21:51 GMT
Do you do any customize action
in SinglePoolMatchAllConnectionInterceptor.internalGetConnection?
It looks like connection pool size has been updated. Suggest to double
check your multi thread implementation. For example, debug to track the
change of pool size.

2015-10-28 15:21 GMT+08:00 sjunejo <junejo.sheeraz@gmail.com>:

> Hi,
>
> I am using Jencks 2.2 with geronimo-connector 2.1.2 implementation. I am
> using this with custom JCA RA implementation and recently when I started
> this in a heavily used multi threaded environment I am getting following
> exception;
>
> java.util.ConcurrentModificationException
>         at
>
> java.util.IdentityHashMap$IdentityHashMapIterator.nextIndex(IdentityHashMap.java:732)
>         at
> java.util.IdentityHashMap$KeyIterator.next(IdentityHashMap.java:822)
>         at
>
> com.jbase.jremote.jca.JRemoteManagedConnectionFactory.matchManagedConnections(Unknown
> Source)
>         at
>
> org.apache.geronimo.connector.outbound.SinglePoolMatchAllConnectionInterceptor.internalGetConnection(SinglePoolMatchAllConnectionInterceptor.java:61)
>         at
>
> org.apache.geronimo.connector.outbound.AbstractSinglePoolConnectionInterceptor.getConnection(AbstractSinglePoolConnectionInterceptor.java:80)
>         at
>
> org.apache.geronimo.connector.outbound.TransactionEnlistingInterceptor.getConnection(TransactionEnlistingInterceptor.java:46)
>         at
>
> org.apache.geronimo.connector.outbound.TransactionCachingInterceptor.getConnection(TransactionCachingInterceptor.java:96)
>         at
>
> org.apache.geronimo.connector.outbound.ConnectionHandleInterceptor.getConnection(ConnectionHandleInterceptor.java:43)
>         at
>
> org.apache.geronimo.connector.outbound.TCCLInterceptor.getConnection(TCCLInterceptor.java:39)
>         at
>
> org.apache.geronimo.connector.outbound.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:87)
>         at
> com.jbase.jremote.jca.JRemoteConnectionFactoryImpl.getConnection(Unknown
> Source)
>         at
> com.jbase.jremote.jca.JRemoteConnectionFactoryImpl.getConnection(Unknown
> Source)
>
> I looked at the source but as far as I can see we are using IdentityHashMap
> but we do synchronize(pool) just before calling the matchManagedConnections
> method on my connection factory.
>
> Does anyone in the mailing encounter this....how can I solve this?
>
> Regards
>
>
>
> --
> View this message in context:
> http://apache-geronimo.328035.n3.nabble.com/ConcurrentModificationException-from-SinglePoolMatchAllConnectionInterceptor-tp3989671.html
> Sent from the Users mailing list archive at Nabble.com.
>



-- 
Best Regards
Gary

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