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https://issues.apache.org/jira/browse/TUSCANY-1179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hasan Muhammad updated TUSCANY-1179:
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Attachment: CreateDataObjectMultiThreadedTestCase.java
1179.patch
I have attached the patch which resolves this issue.
I have also attached a testcase CreateDataObjectMultiThreadedTestCase.java:
This testcase requires the GroboUtils.jar which is a Junit extension to develop
MultiThreaded testcase. You can obtain it from
http://groboutils.sourceforge.net/
> Race condition due to lazy metada initialization when SDO is shared across
> threads for read intent
> --------------------------------------------------------------------------------------------------
>
> Key: TUSCANY-1179
> URL: https://issues.apache.org/jira/browse/TUSCANY-1179
> Project: Tuscany
> Issue Type: Bug
> Environment: ALL
> Reporter: Hasan Muhammad
> Attachments: 1179.patch, CreateDataObjectMultiThreadedTestCase.java
>
>
> An a DataObject is being shared across multiple threads for read-only purpose
> ( no modification), due to lazy metadata initialization, we have a race
> condition which results in different exceptions at different times (
> ConcurrentModificationException, NoSuchElementException). The following is
> one trace;
> java.util.ConcurrentModificationException
> at
> org.eclipse.emf.common.util.BasicEList$EIterator.checkModCount(BasicEList.java:1327)
> at
> org.eclipse.emf.common.util.BasicEList$EIterator.next(BasicEList.java:1275)
> at
> org.apache.tuscany.sdo.impl.ClassImpl.initAliasNames(ClassImpl.java:404)
> at org.apache.tuscany.sdo.impl.ClassImpl.getProperty(ClassImpl.java:423)
> at
> org.apache.tuscany.sdo.util.DataObjectUtil.get(DataObjectUtil.java:731)
> at
> org.apache.tuscany.sdo.impl.DataObjectImpl.get(DataObjectImpl.java:216)
> at
> org.apache.tuscany.sdo.impl.DataObjectImpl.getDataObject(DataObjectImpl.java:326)
> at
> org.apache.tuscany.sdo.test.CreateDataObjectMultiThreadedTestCase$CreateDataObjectMultiThread.runTest(CreateDataObjectMultiThreadedTestCase.java:67)
> at
> net.sourceforge.groboutils.junit.v1.TestRunnable.run(TestRunnable.java:154)
> at java.lang.Thread.run(Thread.java:797)
>
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