narendly commented on a change in pull request #362: The WAGED rebalancer
cluster model implementation
URL: https://github.com/apache/helix/pull/362#discussion_r310336640
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File path:
helix-core/src/main/java/org/apache/helix/controller/rebalancer/waged/model/AssignableReplica.java
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@@ -19,9 +19,119 @@
* under the License.
*/
+import org.apache.helix.model.ResourceConfig;
+import org.apache.helix.model.StateModelDefinition;
+
+import java.io.IOException;
+import java.util.Map;
+
/**
- * A placeholder before we have the implementation.
- *
* This class represents a partition replication that needs to be allocated.
*/
-public class AssignableReplica { }
+public class AssignableReplica implements Comparable<AssignableReplica> {
+ private final String _partitionName;
+ private final String _resourceName;
+ private final String _resourceInstanceGroupTag;
+ private final int _resourceMaxPartitionsPerInstance;
+ private final Map<String, Integer> _capacityUsage;
+ // The priority of the replica's state
+ private final int _statePriority;
+ // The state of the replica
+ private final String _replicaState;
+
Review comment:
I think I was thinking about priority among different partitions. I don't
know how the assignment logic works (is it part of this PR or is it TBD in
another PR?), but I agree with you if we assign replicas by partition.
I was just bringing up the fact that we may need to account partition-level
or resource-level priority at assign time.
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