E1 Locked ownable synchronizers error.

Each time that I invoke a Call BSFN using Dynamic Java Connector, I'm seeing 2 Locked ownable synchronizers error.

"CacheMap com.jdedwards.base.util.cache.CacheMap@53a2a36f garbage collector" #90 daemon prio=5 os_prio=0 tid=0x0000000018de2800 nid=0x27f0 waiting on condition [0x00000000221ff000]

   java.lang.Thread.State: TIMED_WAITING (sleeping)

  at java.lang.Thread.sleep(Native Method)

  at com.jdedwards.base.util.cache.CacheMap$GarbageCollector.run(Unknown Source)

   Locked ownable synchronizers:

  - None

To get this locking, I' using jstack.

I did that, because the memory used grow a lot.