lokeshj1703 commented on code in PR #3485:
URL: https://github.com/apache/ozone/pull/3485#discussion_r923119942
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hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/container/balancer/ContainerBalancer.java:
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@@ -103,8 +103,18 @@ public class ContainerBalancer extends StatefulService {
private volatile Thread currentBalancingThread;
private Lock lock;
private ContainerBalancerSelectionCriteria selectionCriteria;
- private Map<DatanodeDetails, ContainerMoveSelection> sourceToTargetMap;
- private Set<ContainerID> selectedContainers;
+
+ /*
+ Since a container can be selected only once during an iteration, these maps
+ use it as a primary key to track source to target pairings.
+ */
+ private final Map<ContainerID, DatanodeDetails> containerFromSourceMap;
+ private final Map<ContainerID, DatanodeDetails> containerToTargetMap;
+
+ private Set<DatanodeDetails> selectedTargets;
+ private Set<DatanodeDetails> selectedSources;
+ // maintaining a list of containers for testing
+ private final List<ContainerID> selectedContainersList;
Review Comment:
Yeah I would suggest creating a function in the test class which uses
containerFromSourceMap
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