[jira] Updated: (DBCP-294) Memory leak in XA Implementation

     [ https://issues.apache.org/jira/browse/DBCP-294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Philippe Mouawad updated DBCP-294:
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    Description:
Hello,
We are been using Ofbiz with DBCP based implementation.
Ofbiz uses a Head revision of DBCP (package org.apache.commons.dbcp.managed is the same as current TRUNK) and geronimo-transaction-1.0.

We are having recurrent OutOfMemory which occur on a 2 days basis.
I analyzed the Heap Dump and I think have found the source of the problem:
The Heap Dump shows a Retained Heap of 400Mo by org.apache.commons.dbcp.managed.TransactionRegistry#xaResources field.

After analyzing more deeply, the leak seems to come from what is stored in xaResources through
xaResources.put(connection, xaResource);

Values inside weak Hash map  will never be removed since XAResource holds a STRONG reference on key (connection) through:
org.apache.commons.dbcp.managed.LocalXAConnectionFactory$LocalXAResource through:
public LocalXAResource(Connection localTransaction) {
            this.connection = localTransaction;
        }

Philippe Mouawad
http://www.ubik-ingenierie.com

  was:
Hello,
We are been using Ofbiz with DBCP based implementation.
Ofbiz uses a Head revision of DBCP (package org.apache.commons.dbcp.managed is the same as current TRUNK) and geronimo-transaction-1.0.

We are having recurrent OutOfMemory which occur on a 2 days basis.
I analyzed the Heap Dump and I think have found the source of the problem:
The Heap Dump shows a Retained Heap of 400Mo by org.apache.commons.dbcp.managed.TransactionRegistry#xaResources field.

After analyzing more deeply, the leak seems to come from what is stored in xaResources through
xaResources.put(connection, xaResource);

Values inside weak Hash map  will never be removed since XAResource holds a STRONG reference on key (connection) through:
org.apache.commons.dbcp.managed.LocalXAConnectionFactory$LocalXAResource through:
public LocalXAResource(Connection localTransaction) {
            this.connection = localTransaction;
        }


www.ubik-ingenierie.com


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