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From "Daniel Persson (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OPENJPA-2193) Nullpointer exception when persisting object during high load
Date Tue, 10 Jul 2012 21:16:35 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-2193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daniel Persson updated OPENJPA-2193:
------------------------------------

    Attachment: patch-tomcat-pooling-fix.patch

I thought the problem where when the pool reset the connection before the entity manager could
update the entity.

My solution in this patch is to reconnect if the connection is null during the begin of an
transaction.

Might be the wrong solution to the problem but it solved the issue for me. Please advice if
you prefer an other solution..

Best regards

Daniel
                
> Nullpointer exception when persisting object during high load
> -------------------------------------------------------------
>
>                 Key: OPENJPA-2193
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2193
>             Project: OpenJPA
>          Issue Type: Bug
>            Reporter: Daniel Persson
>            Priority: Minor
>         Attachments: patch-tomcat-pooling-fix.patch
>
>
> During high load and many persists _conn is null during commit.
> Caused by: <openjpa-2.2.0-r422266:1244990 nonfatal general error> org.apache.openjpa.persistence.PersistenceException:
null
>         at org.apache.openjpa.kernel.BrokerImpl.afterCompletion(BrokerImpl.java:2034)
>         at org.apache.openjpa.kernel.LocalManagedRuntime.commit(LocalManagedRuntime.java:94)
>         at org.apache.openjpa.kernel.BrokerImpl.commit(BrokerImpl.java:1514)
>         at org.apache.openjpa.kernel.DelegatingBroker.commit(DelegatingBroker.java:933)
>         at org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:570)
>         ... 29 more
> Caused by: java.lang.NullPointerException
>         at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.commit(JDBCStoreManager.java:196)
>         at org.apache.openjpa.kernel.DelegatingStoreManager.commit(DelegatingStoreManager.java:95)
>         at org.apache.openjpa.datacache.DataCacheStoreManager.commit(DataCacheStoreManager.java:88)
>         at org.apache.openjpa.kernel.DelegatingStoreManager.commit(DelegatingStoreManager.java:95)
>         at org.apache.openjpa.kernel.BrokerImpl.endStoreManagerTransaction(BrokerImpl.java:1471)
>         at org.apache.openjpa.kernel.BrokerImpl.endTransaction(BrokerImpl.java:2351)
>         at org.apache.openjpa.kernel.BrokerImpl.afterCompletion(BrokerImpl.java:2010)
>         ... 33 more

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