public void setEventReady(ProcedureEvent<?> event, boolean isReady) {
    if (isReady) {
      event.wake(procSched);
    } else {
      event.suspend();
    }
  }
Get a thread pool for executing some asynchronous tasks
hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.java