Is it a memory leak with LIRS eviction strategy in JDG6 and JDG7

Issue

• I have a memory/heap issue with the LIRS eviction strategy
• When I put a lot of data in a cache with an eviction size (10 for an example), the cache size is 10 (that's the expected behaviour).
  But if we have a look deep inside the DataContainer ant the BoundedEquivalentConcurrentHashMapV8 content, we can see that a lot of keys are still retained by the internal structure.
• Populate a cache cause OurOfMemory if LIRS policy is used for eviction, is that a memory leak?