Code flow description

• ParentProcess creates 1 ChildProcess
• ChildProcess creates many threads. Each thread just print log only. ChildProcess 's main thread also print log.
• Logging is output to File + Console
• App freeze after some threads started (quantity randomly from 300 -> 600 ...)
  Please refer this repo: https://github.com/huymluu/logbackfreeze

Note
Issue not happen when:

• Run directly ChildProcess (without ParentProcess)
• Log to File only (no Console log)