Reduce contention on repository getSession

Java Monitor Blocked
 at org.nuxeo.ecm.core.repository.RepositoryService.getSession(String)
 at org.nuxeo.ecm.core.api.local.LocalSession.createSession()
 at org.nuxeo.ecm.core.api.local.LocalSession.connect(String, NuxeoPrincipal)

	at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:681)
	at org.nuxeo.runtime.jtajca.NuxeoValidationSupport$QuerySQLConnection.validate(NuxeoValidationSupport.java:86)
	at org.nuxeo.runtime.jtajca.NuxeoValidationSupport$ValidationInterceptor.getConnection(NuxeoValidationSupport.java:116)
	at org.apache.geronimo.connector.outbound.TransactionEnlistingInterceptor.getConnection(TransactionEnlistingInterceptor.java:49)
	at org.apache.geronimo.connector.outbound.TransactionCachingInterceptor.getConnection(TransactionCachingInterceptor.java:101)
	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.ConnectionTrackingInterceptor.getConnection(ConnectionTrackingInterceptor.java:66)
	at org.apache.geronimo.connector.outbound.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:77)
	at org.nuxeo.runtime.jtajca.NuxeoContainer$ConnectionManagerWrapper.allocateConnection(NuxeoContainer.java:739)
	at org.tranql.connector.jdbc.TranqlDataSource.getConnection(TranqlDataSource.java:62)
	at org.nuxeo.runtime.datasource.PooledDataSourceFactory$1NuxeoDataSource.getConnection(PooledDataSourceFactory.java:94)
	at org.nuxeo.runtime.datasource.ConnectionHelper.getConnection(ConnectionHelper.java:823)
	at org.nuxeo.ecm.core.storage.sql.jdbc.JDBCConnection.openBaseConnection(JDBCConnection.java:147)
	at org.nuxeo.ecm.core.storage.sql.jdbc.JDBCConnection.openConnections(JDBCConnection.java:136)
	at org.nuxeo.ecm.core.storage.sql.jdbc.JDBCMapper.connect(JDBCMapper.java:1413)
	at org.nuxeo.ecm.core.storage.sql.jdbc.JDBCMapperConnector.invoke(JDBCMapperConnector.java:65)
	at com.sun.proxy.$Proxy55.setTransactionTimeout(Unknown Source)
	at org.nuxeo.ecm.core.storage.sql.SoftRefCachingMapper.setTransactionTimeout(SoftRefCachingMapper.java:201)
	at org.nuxeo.ecm.core.storage.sql.SessionImpl.setTransactionTimeout(SessionImpl.java:1500)
	at org.apache.geronimo.transaction.manager.WrapperNamedXAResource.setTransactionTimeout(WrapperNamedXAResource.java:104)
	at org.apache.geronimo.transaction.manager.TransactionImpl.enlistResource(TransactionImpl.java:204)
	- locked <0x00000006b9860f90> (a org.apache.geronimo.transaction.manager.TransactionImpl)
	at org.apache.geronimo.connector.outbound.TransactionEnlistingInterceptor.getConnection(TransactionEnlistingInterceptor.java:60)
	at org.apache.geronimo.connector.outbound.TransactionCachingInterceptor.getConnection(TransactionCachingInterceptor.java:101)
	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.ConnectionTrackingInterceptor.getConnection(ConnectionTrackingInterceptor.java:66)
	at org.apache.geronimo.connector.outbound.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:77)
	at org.nuxeo.runtime.jtajca.NuxeoContainer$ConnectionManagerWrapper.allocateConnection(NuxeoContainer.java:739)
	at org.nuxeo.ecm.core.storage.sql.ra.ConnectionFactoryImpl.getConnection(ConnectionFactoryImpl.java:96)
	at org.nuxeo.ecm.core.storage.sql.ra.ConnectionFactoryImpl.getSession(ConnectionFactoryImpl.java:159)
	at org.nuxeo.ecm.core.repository.RepositoryService.getSession(RepositoryService.java:230)