NecOnIce opened a new pull request #968: Fixed the Reference of the metaclass in ClassInfo.java to use a Weak… URL: https://github.com/apache/groovy/pull/968 …Reference now, so the Reference is cleaned up nearly immediately after freeing the last strong reference of the metaclass. Prior it was used a SoftReference which prevents the ClassLoader, the ClassInfo and the Metaclass instances from beeing garbage-collected until the JVM runs nearly into an OutOfMemoryException (PermGen). This leads to a JVM which is always near the maximum of memory usage.
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