[HBASE-23789] [Flakey Tests] ERROR [Time-limited test] balancer.HeterogeneousRegionCountCostFunction(199): cannot read rules file located at ' /tmp/hbase-balancer.rules '

• Type: Test
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.3.0
• Component/s: flakies
• Assignee: Michael Stack
• Reporter: Michael Stack
• Created: 04/Feb/20 05:49
• Updated: 07/Apr/20 21:39
• Resolved: 05/Feb/20 00:42

Description

We can't find the balancer rules we just read in the HeterogeneousRegionCountCostFunction test in high load conditions

 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

Test then goes on to fail with:

 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)

Instead, have tests write rules to local test dir.

Issue Links

• links to: GitHub Pull Request #1123