Objects are not getting cleared in Old Gen even after GC - Netty ObjectCleanerThread retaining objects in JBoss EAP 7.2

Solution Verified - Updated -

Issue

After an hour of testing, we see that the GC doesn't get cleared. Using Java Heap dump we found out that the io.netty.util.ObjectCleaner is retaining about 2.3 million ObjectCleaner objects. Due to this, the throughput of the system slows down considerably.

Environment

  • Red Hat JBoss Enterprise Application Platform (EAP)
    • 7.2.0

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