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Posted to dev@uima.apache.org by "Jerry Cwiklik (JIRA)" <ui...@incubator.apache.org> on 2009/06/08 20:42:07 UTC
[jira] Created: (UIMA-1376) Fix NPE in Uima AS Aggregate while
handling getMeta responses
Fix NPE in Uima AS Aggregate while handling getMeta responses
-------------------------------------------------------------
Key: UIMA-1376
URL: https://issues.apache.org/jira/browse/UIMA-1376
Project: UIMA
Issue Type: Bug
Components: Async Scaleout
Reporter: Jerry Cwiklik
While merging type system from a delegate Uima AS the following exception is thrown:
6/8/09 8:59:20 AM - 32: org.apache.uima.aae.error.handler.GetMetaErrorHandler.handleError: WARNING: {0}
java.lang.NullPointerException
at org.apache.uima.resource.CasDefinition.<init>(CasDefinition.java:66)
at org.apache.uima.resource.impl.CasManager_impl.getCasDefinition(CasManager_impl.java:94)
at org.apache.uima.resource.impl.CasManager_impl.createNewCas(CasManager_impl.java:196)
at org.apache.uima.util.CasPool.fillPool(CasPool.java:319)
at org.apache.uima.util.CasPool.<init>(CasPool.java:191)
at org.apache.uima.resource.impl.CasManager_impl.defineCasPool(CasManager_impl.java:174)
at org.apache.uima.resource.impl.CasManager_impl.defineCasPool(CasManager_impl.java:152)
at org.apache.uima.aae.EECasManager_impl.defineCasPool(EECasManager_impl.java:60)
at org.apache.uima.aae.AsynchAECasManager_impl.initialize(AsynchAECasManager_impl.java:98)
at org.apache.uima.aae.AsynchAECasManager_impl.initialize(AsynchAECasManager_impl.java:86)
at org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.mergeTypeSystem(AggregateAnalysisEngineController_impl.java:2182)
at org.apache.uima.aae.handler.input.MetadataResponseHandler_impl.handle(MetadataResponseHandler_impl.java:133)
at org.apache.uima.aae.handler.HandlerBase.delegate(HandlerBase.java:158)
at org.apache.uima.aae.handler.input.ProcessResponseHandler.handle(ProcessResponseHandler.java:673)
at org.apache.uima.adapter.jms.activemq.JmsInputChannel.onMessage(JmsInputChannel.java:665)
at org.apache.uima.adapter.jms.activemq.ConcurrentMessageListener$1.run(ConcurrentMessageListener.java:163)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
it could be that this is caused when two threads simultaneously try to merge their typesystems. This exception happens rarely, suggesting a race condition of some sort or/and perhaps, that the core is not thread safe with respect to merging typesystems in multiple threads. The latter is just a speculation.
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[jira] Commented: (UIMA-1376) Fix NPE in Uima AS Aggregate while
handling getMeta responses
Posted by "Jerry Cwiklik (JIRA)" <ui...@incubator.apache.org>.
[ https://issues.apache.org/jira/browse/UIMA-1376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12717358#action_12717358 ]
Jerry Cwiklik commented on UIMA-1376:
-------------------------------------
Modified Uima AS aggregate code to synchronize mergeTypeSystem() method. The obvious side effect of this change is that the aggregate merges type systems one at a time, which perhaps is what we want anyway.
> Fix NPE in Uima AS Aggregate while handling getMeta responses
> -------------------------------------------------------------
>
> Key: UIMA-1376
> URL: https://issues.apache.org/jira/browse/UIMA-1376
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Reporter: Jerry Cwiklik
>
> While merging type system from a delegate Uima AS the following exception is thrown:
> 6/8/09 8:59:20 AM - 32: org.apache.uima.aae.error.handler.GetMetaErrorHandler.handleError: WARNING: {0}
> java.lang.NullPointerException
> at org.apache.uima.resource.CasDefinition.<init>(CasDefinition.java:66)
> at org.apache.uima.resource.impl.CasManager_impl.getCasDefinition(CasManager_impl.java:94)
> at org.apache.uima.resource.impl.CasManager_impl.createNewCas(CasManager_impl.java:196)
> at org.apache.uima.util.CasPool.fillPool(CasPool.java:319)
> at org.apache.uima.util.CasPool.<init>(CasPool.java:191)
> at org.apache.uima.resource.impl.CasManager_impl.defineCasPool(CasManager_impl.java:174)
> at org.apache.uima.resource.impl.CasManager_impl.defineCasPool(CasManager_impl.java:152)
> at org.apache.uima.aae.EECasManager_impl.defineCasPool(EECasManager_impl.java:60)
> at org.apache.uima.aae.AsynchAECasManager_impl.initialize(AsynchAECasManager_impl.java:98)
> at org.apache.uima.aae.AsynchAECasManager_impl.initialize(AsynchAECasManager_impl.java:86)
> at org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.mergeTypeSystem(AggregateAnalysisEngineController_impl.java:2182)
> at org.apache.uima.aae.handler.input.MetadataResponseHandler_impl.handle(MetadataResponseHandler_impl.java:133)
> at org.apache.uima.aae.handler.HandlerBase.delegate(HandlerBase.java:158)
> at org.apache.uima.aae.handler.input.ProcessResponseHandler.handle(ProcessResponseHandler.java:673)
> at org.apache.uima.adapter.jms.activemq.JmsInputChannel.onMessage(JmsInputChannel.java:665)
> at org.apache.uima.adapter.jms.activemq.ConcurrentMessageListener$1.run(ConcurrentMessageListener.java:163)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
> it could be that this is caused when two threads simultaneously try to merge their typesystems. This exception happens rarely, suggesting a race condition of some sort or/and perhaps, that the core is not thread safe with respect to merging typesystems in multiple threads. The latter is just a speculation.
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[jira] Closed: (UIMA-1376) Fix NPE in Uima AS Aggregate while
handling getMeta responses
Posted by "Jerry Cwiklik (JIRA)" <ui...@incubator.apache.org>.
[ https://issues.apache.org/jira/browse/UIMA-1376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jerry Cwiklik closed UIMA-1376.
-------------------------------
Resolution: Fixed
> Fix NPE in Uima AS Aggregate while handling getMeta responses
> -------------------------------------------------------------
>
> Key: UIMA-1376
> URL: https://issues.apache.org/jira/browse/UIMA-1376
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Reporter: Jerry Cwiklik
>
> While merging type system from a delegate Uima AS the following exception is thrown:
> 6/8/09 8:59:20 AM - 32: org.apache.uima.aae.error.handler.GetMetaErrorHandler.handleError: WARNING: {0}
> java.lang.NullPointerException
> at org.apache.uima.resource.CasDefinition.<init>(CasDefinition.java:66)
> at org.apache.uima.resource.impl.CasManager_impl.getCasDefinition(CasManager_impl.java:94)
> at org.apache.uima.resource.impl.CasManager_impl.createNewCas(CasManager_impl.java:196)
> at org.apache.uima.util.CasPool.fillPool(CasPool.java:319)
> at org.apache.uima.util.CasPool.<init>(CasPool.java:191)
> at org.apache.uima.resource.impl.CasManager_impl.defineCasPool(CasManager_impl.java:174)
> at org.apache.uima.resource.impl.CasManager_impl.defineCasPool(CasManager_impl.java:152)
> at org.apache.uima.aae.EECasManager_impl.defineCasPool(EECasManager_impl.java:60)
> at org.apache.uima.aae.AsynchAECasManager_impl.initialize(AsynchAECasManager_impl.java:98)
> at org.apache.uima.aae.AsynchAECasManager_impl.initialize(AsynchAECasManager_impl.java:86)
> at org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.mergeTypeSystem(AggregateAnalysisEngineController_impl.java:2182)
> at org.apache.uima.aae.handler.input.MetadataResponseHandler_impl.handle(MetadataResponseHandler_impl.java:133)
> at org.apache.uima.aae.handler.HandlerBase.delegate(HandlerBase.java:158)
> at org.apache.uima.aae.handler.input.ProcessResponseHandler.handle(ProcessResponseHandler.java:673)
> at org.apache.uima.adapter.jms.activemq.JmsInputChannel.onMessage(JmsInputChannel.java:665)
> at org.apache.uima.adapter.jms.activemq.ConcurrentMessageListener$1.run(ConcurrentMessageListener.java:163)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
> it could be that this is caused when two threads simultaneously try to merge their typesystems. This exception happens rarely, suggesting a race condition of some sort or/and perhaps, that the core is not thread safe with respect to merging typesystems in multiple threads. The latter is just a speculation.
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[jira] Updated: (UIMA-1376) Fix NPE in Uima AS Aggregate while
handling getMeta responses
Posted by "Jerry Cwiklik (JIRA)" <ui...@incubator.apache.org>.
[ https://issues.apache.org/jira/browse/UIMA-1376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jerry Cwiklik updated UIMA-1376:
--------------------------------
Fix Version/s: 2.3AS
> Fix NPE in Uima AS Aggregate while handling getMeta responses
> -------------------------------------------------------------
>
> Key: UIMA-1376
> URL: https://issues.apache.org/jira/browse/UIMA-1376
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Reporter: Jerry Cwiklik
> Fix For: 2.3AS
>
>
> While merging type system from a delegate Uima AS the following exception is thrown:
> 6/8/09 8:59:20 AM - 32: org.apache.uima.aae.error.handler.GetMetaErrorHandler.handleError: WARNING: {0}
> java.lang.NullPointerException
> at org.apache.uima.resource.CasDefinition.<init>(CasDefinition.java:66)
> at org.apache.uima.resource.impl.CasManager_impl.getCasDefinition(CasManager_impl.java:94)
> at org.apache.uima.resource.impl.CasManager_impl.createNewCas(CasManager_impl.java:196)
> at org.apache.uima.util.CasPool.fillPool(CasPool.java:319)
> at org.apache.uima.util.CasPool.<init>(CasPool.java:191)
> at org.apache.uima.resource.impl.CasManager_impl.defineCasPool(CasManager_impl.java:174)
> at org.apache.uima.resource.impl.CasManager_impl.defineCasPool(CasManager_impl.java:152)
> at org.apache.uima.aae.EECasManager_impl.defineCasPool(EECasManager_impl.java:60)
> at org.apache.uima.aae.AsynchAECasManager_impl.initialize(AsynchAECasManager_impl.java:98)
> at org.apache.uima.aae.AsynchAECasManager_impl.initialize(AsynchAECasManager_impl.java:86)
> at org.apache.uima.aae.controller.AggregateAnalysisEngineController_impl.mergeTypeSystem(AggregateAnalysisEngineController_impl.java:2182)
> at org.apache.uima.aae.handler.input.MetadataResponseHandler_impl.handle(MetadataResponseHandler_impl.java:133)
> at org.apache.uima.aae.handler.HandlerBase.delegate(HandlerBase.java:158)
> at org.apache.uima.aae.handler.input.ProcessResponseHandler.handle(ProcessResponseHandler.java:673)
> at org.apache.uima.adapter.jms.activemq.JmsInputChannel.onMessage(JmsInputChannel.java:665)
> at org.apache.uima.adapter.jms.activemq.ConcurrentMessageListener$1.run(ConcurrentMessageListener.java:163)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
> it could be that this is caused when two threads simultaneously try to merge their typesystems. This exception happens rarely, suggesting a race condition of some sort or/and perhaps, that the core is not thread safe with respect to merging typesystems in multiple threads. The latter is just a speculation.
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