A full garbage collection (GC) in the Garbage First (G1) collector now moves humongous objects to avoid Out-Of-Memory situations due to a lack of contiguous space in the Java heap when the application allocates humongous objects.

Previously, G1 failed to allocate those humongous objects, reporting an Out-Of-Memory exception in this situation.

This functionality is a last resort measure, causing a second full GC in the same pause after the previous full GC fails to clear out enough contiguous memory for the allocation.