public void setServiceComponentHosts(List<ServiceComponentHost> serviceComponentHosts) {
      this.serviceComponentHosts = serviceComponentHosts;
    }
Tests AMBARI-12526 by constantly writing version and state to service
component hosts. The deadlock this is testing for occurred when different
rows were concurrently being updated by different threads and different
transactions.
ambari-server/src/test/java/org/apache/ambari/server/state/cluster/ServiceComponentHostConcurrentWriteDeadlockTest.java