[Flakey Tests] ERROR [Time-limited test] balancer.HeterogeneousRegionCountCostFunction(199): cannot read rules file located at ' /tmp/hbase-balancer.rules '

 2020-02-03 20:51:00,774 ERROR [Time-limited test] balancer.HeterogeneousRegionCountCostFunction(199): cannot read rules file located at ' /tmp/hbase-balancer.rules ':File /tmp/hbase-balancer.rules does not exist
 2020-02-03 20:51:00,774 WARN  [Time-limited test] balancer.HeterogeneousRegionCountCostFunction(155): cannot load rules file, keeping latest rules file which has 1 rules

 org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancerHeterogeneousCost.testOneGroup  Time elapsed: 15.223 s  <<< FAILURE!
 junit.framework.AssertionFailedError: Host rs0 should be below 0.0%
   at org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancerHeterogeneousCost.testWithCluster(TestStochasticLoadBalancerHeterogeneousCost.java:209)
   at org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancerHeterogeneousCost.testHeterogeneousWithCluster(TestStochasticLoadBalancerHeterogeneousCost.java:160)
   at org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancerHeterogeneousCost.testOneGroup(TestStochasticLoadBalancerHeterogeneousCost.java:102)