Try obtaining a thread dump. It will help debug. Anything that goes via JMX such as nodetool could be responsible for it.
Dinesh > On Jul 28, 2019, at 10:57 PM, Vlad <qa23d-...@yahoo.com.INVALID > <mailto:qa23d-...@yahoo.com.INVALID>> wrote: > > Hi, > > suddenly I noticed that one of three nodes started consume CPU in RMI TCP > Connection threads. > > What it could be? > > Thanks.
