CPU spinning at TreeMap.get in Schema.java
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Key: OPENJPA-1970
URL: https://issues.apache.org/jira/browse/OPENJPA-1970
Project: OpenJPA
Issue Type: Bug
Components: jdbc
Affects Versions: 1.1.1
Environment: openJPA 1.1.x
Reporter: Ravi P Palacherla
Assignee: Ravi P Palacherla
CPU is spinning at TreeMap.get in schema.java.
The reason found to be because of structural modification of treemap outside a
synchronized block.
Synchronizing the treemap is fixing the issue.
The issue can be reproduced with an openJPA test case but due to the nature of
the problem, it is replicable intermittently on dual core machine.
Attached patch has the test case and also the test case is ignored in default
runs because it will cause the tests to stuck at TreeMap.get.
This is seen in 1.1.x version of openJPA and hence uploading the patch only for
that version.
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