LSM and YCSB 50/50 - Is it scale up to the amount of handles w/o deletes?

I’m running a standalone w/ LSM and YCSB 50/50 traffic

The performance characteristic seems like a foot print of a handle leak, but I think this is not a handle leak b/c the traffic is mostly adding and reading data.

Is it means that LSM will scale up to the amount of file descriptors / handles? Or we have a mechanism to close the handle after a threshold .

Type Count
None 4
Event 248
Section 1544
File 6369
Directory 2
WindowStation 2
Semaphore 22
Key 6
Thread 85
Desktop 1
IoCompletion 2
Timer 2
TpWorkerFactory 2
ALPC Port 1
WaitCompletionPacket