Antoine DESSAIGNE created FELIX-5942:
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Summary: Felix Framework freezes when resolving classes in
parallel with Java 10
Key: FELIX-5942
URL: https://issues.apache.org/jira/browse/FELIX-5942
Project: Felix
Issue Type: Bug
Components: Framework
Affects Versions: framework-6.0.1
Reporter: Antoine DESSAIGNE
Attachments: ConcurrentClassLoaderTest.java
Hello.
When resolving a class in parallel in Java 10, you end up with a freeze.
You end up with threads beeing blocked
{noformat}
"Thread-99" #121 prio=5 os_prio=0 tid=0x000001bdaf679000 nid=0x69d4 in
Object.wait() [0x000000296d0fe000]
java.lang.Thread.State: BLOCKED (on object monitor)
at java.lang.Object.wait([email protected]/Native Method)
- waiting on <0x00000006c931dd20> (a [Ljava.lang.Object;)
at java.lang.Object.wait([email protected]/Object.java:328)
at org.apache.felix.framework.Felix.acquireGlobalLock(Felix.java:4301)
- waiting to re-lock in wait() <0x00000006c931dd20> (a
[Ljava.lang.Object;)
at
org.apache.felix.framework.StatefulResolver.resolve(StatefulResolver.java:413)
at
org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:3318)
at org.apache.felix.framework.Felix.loadBundleClass(Felix.java:1618)
at org.apache.felix.framework.BundleImpl.loadClass(BundleImpl.java:978)
at
org.apache.felix.framework.ConcurrentClassLoaderTest$1.run(ConcurrentClassLoaderTest.java:69){noformat}
You'll find attached a test reproducing the issue.
Here's what you need to freeze felix :
* Lots of threads trying to acquire the global lock
** Here we're resolving a class from a bundle with dynamic import packages
* A Java 10 runtime
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