DaveTeng0 commented on code in PR #3904:
URL: https://github.com/apache/ozone/pull/3904#discussion_r1009985810
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hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/balancer/TestContainerBalancerTask.java:
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@@ -543,6 +543,47 @@ public void balancerShouldObeyMaxSizeEnteringTargetLimit()
.isEmpty());
}
+ @Test
+ public void balancerShouldObeyMaxSizeLeavingSourceLimit()
+ throws IllegalContainerBalancerStateException, IOException,
+ InvalidContainerBalancerConfigurationException, TimeoutException {
+ conf.set("ozone.scm.container.size", "1MB");
+ balancerConfiguration =
+ conf.getObject(ContainerBalancerConfiguration.class);
+ balancerConfiguration.setThreshold(10);
+ balancerConfiguration.setMaxDatanodesPercentageToInvolvePerIteration(100);
+ balancerConfiguration.setMaxSizeToMovePerIteration(50 * STORAGE_UNIT);
+
+ // no source containers should be selected when the limit is just 2 MB
+ balancerConfiguration.setMaxSizeLeavingSource(2 * OzoneConsts.MB);
+ startBalancer(balancerConfiguration);
+
+ Assertions.assertFalse(containerBalancerTask.getUnBalancedNodes()
+ .isEmpty());
+ Assertions.assertTrue(containerBalancerTask.getContainerToSourceMap()
+ .isEmpty());
+ stopBalancer();
+
+ // some containers should be selected when using default values
+ OzoneConfiguration ozoneConfiguration = new OzoneConfiguration();
+ ContainerBalancerConfiguration cbc = ozoneConfiguration.
+ getObject(ContainerBalancerConfiguration.class);
+ cbc.setBalancingInterval(1);
+ ContainerBalancer sb = new ContainerBalancer(scm);
+ containerBalancerTask = new ContainerBalancerTask(scm, 0, sb,
+ sb.getMetrics(), cbc);
+ containerBalancerTask.run();
+
+ stopBalancer();
+ // balancer should have identified unbalanced nodes
+ Assertions.assertFalse(containerBalancerTask.getUnBalancedNodes()
+ .isEmpty());
+ Assertions.assertFalse(containerBalancerTask.getContainerToSourceMap()
+ .isEmpty());
+ Assertions.assertTrue(0 !=
+ containerBalancerTask.getSizeScheduledForMoveInLatestIteration());
Review Comment:
sorry! just for myself learning! why the number is not 0? (is it because we
set etMaxSizeLeavingSource(2 * OzoneConsts.MB)?)
thanks!
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