Critical Description
When lot of ComputedImage are created (for example when ressampling a lot of images), some tiles consumed by the images may never be reclaimed by the garbage collector. The root cause is in the org.apache.sis.util.collection.Cache class, but this bug manifests only with org.apache.sis.image.TileCache (not with the other usages of Cache in SIS) because it happens only when a Cache.remove(…) method is explicitly invoked (instead of relying on automatic removal after garbage collection).