resident items percentage is 0.00007 when (key+metadata) is near bucket's ram capacity

ran into this issue when running a test which inserts 14 million items : key_size = 70 bytes and value size - 30 bytes.

as you can see in the graph all items were instantly ejected from memory to disk when the (key+metdata) size was close to 4 GB ( bucket size)

Chiyoung mentioned this is an expected behavior . in that case we need to
1) have an alert in the UI notifying the user about this state
2) users should always check before overloading the database that the (key+metadata) size is not exceeding the bucket ram otherwise to avoid down time or slowness