[ https://issues.apache.org/jira/browse/OPENJPA-1898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mark Struberg updated OPENJPA-1898: ----------------------------------- Attachment: OPENJPA-1898.patch reduce parallel threads from 1000 to 800. Now it's not very likely that any user hits the default 1024 threads limit, but we still have enough parallel loops running > TestQueryMultiThreaded fails with OOME "unable to create new native thread" > --------------------------------------------------------------------------- > > Key: OPENJPA-1898 > URL: https://issues.apache.org/jira/browse/OPENJPA-1898 > Project: OpenJPA > Issue Type: Bug > Affects Versions: 2.0.1 > Reporter: Mark Struberg > Attachments: OPENJPA-1898.patch > > > here comes the stacktrace: > <error message="unable to create new native thread" > type="java.lang.OutOfMemoryError">java.lang.OutOfMemoryError: unable to > create new native thread > at java.lang.Thread.start0(Native Method) > at java.lang.Thread.start(Thread.java:597) > at > org.apache.openjpa.slice.TestQueryMultiThreaded.testHeavyLoad(TestQueryMultiThreaded.java:236) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at junit.framework.TestCase.runTest(TestCase.java:154) > reducing the thread count to 800 should help to prevent this problem. This > might be caused to the 1024 processes ulimit on most linux installations. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.